Sousei no Aquarion

The general outline of the plot is similar in that there are "Angels" attacking earth and mechas (called Evas) piloted by certain young people (in this case, teens). Neon Genesis Evangelion is different in that it focuses on psychological themes more than Aquarion, and there is more emphasis on the mystery behind what the Evas and Angels really are. 

Some places and characters... Like Atlandia ( Aquarion ) that has similarities with Asgard ( Escaflowne ). etc... 

Angels vs Humans.... fighting for survival and annihilation. With action, mecha, and romance; these two animes are worthy of watching if you like the combination of these genres. 

Both have a similar style and a a decent story underneath all the action. Aquarion you have a love story along with trying to save humanity. Heroic age is also a good series where the characters are trying to save the human race, all while trying to understand the main character. I highly recommend both.... 

Both series deals with the conflict of battles/wars against a certain adversary. In order to combat their foes, the usage of mecha is employed that requires skilled pilots to handle them.. In both series, the main male protagonist shows aggressive behavior in fighting his enemies but at the same time cares about his comrades. There is also hints of romance tensions between the MC and the main female protagonists from both series. Among other factors, there is strange origins regarding the mecha of both series as they seem to have mysterious powers. (they are considered super weapons). There is also some comedy, drama, and tense moments between other characters as well as their interactions. read more 

Another good storyline with meca action, Characters are well developed with a ever changing storyline and aftermath affects of that on the characters themselfs, worth checking out. 

Both shows have a 3 jet combining robot 

Mecha series filled with action, romance, and drama. Both of these series involves the fusion of mecha machines into a stronger entity to fight against the enemy. The main character from being zero to hero. Throughout the series, both main character learns more about themselves and their origin. Of course there is romance, drama, and among other things. 

Both are Mecha anime. both have a plotline where humans rise up against a force that tries to keep them down. both hav sad endings. 

Similarity : + Transformable mecha units + Mecha unit in both anime is not single unit but consists of 3 parts (Head-Body-Legs) + Main enemy is something like "alien" + MC fighting not alone but in teamwork Different : + Aquarion is not controlled by one pilot but 3 pilots simultaneously connected there mind and body into a single coordination NOTE : Both anime is really good for super sentai fans (power rangers in west) 

they both follow the MC by piloting an unknown machine that transform into a robot and try to save the world. The MC both have an unique characteristic personality with issue. 

Both are mecha Both protagonists are young boys who end up entering a world of "protecting the world" by an "accident" of destiny. Like Comet Lucifer, Aquarion Evol presents two worlds in which one of them desperately wants to be saved. The romance of both is something almost left in the background, on account of the adventures, however, pleases. 

The two animes are mecha animes with very enjoyable art styles. They may be very different but in their own way the are basically the same with their corny plots you will definitely enjoy both if you have seen the other. 

Similar system : Pilots simultaneously connected there mind and body into a single coordination to access new power & new mecha form Different : + Bradyon & Nexon are not required to perform "coupling" process because limited time (only activated for 15 minutes atleast). + Aquarion required coordination from 3 pilot since aquarion body is not single unit but consists of 3 different parts & 3 different pilots  

Mecha unit in both anime is not single unit but consists of several parts. The main team is composed of one group consisting from several members. Story tells about invasion "alien", to prevent more victims, aquarion & dancougar nova created just for that. To control aquarion pilots must connected there mind and body into a single coordination, dancougar nova also have same condition but with "little exception". 

Both are mecha anime series, where the human race must fight for their survival. And there are major character development between friends. 

Both Anime are Really Interesting and Both of them are Talking about the Greek Methology, Where in Gigantic Formula are talking about the Greek Gods, While in Sousei no Aquarion are talking about the Stars Signs,Zues and Angels. Well u will get the point when u watch it. Both of them are similar where they Combine to become more stronger, but in Gigantic Formula they kinda combine and use their enemy weapon or parts when they defeated there enemy. Ohh i kinda forgot to mention that, Sousei no Aquarion has more Comedy than Gigantic Formula. But Its Still Worth to Watch. 

Warriors are reincarnated to fight once again; that is the similarities between the both of these animes. They both have their ecchiness, but display it differently. If your looking for some action, then you are sure to like both of these animes. 

Post-apocalyptic animes where humanity is fighting for their survival. Both anime have their own individuality and similarities between plots and characters. If you want action, mecha, and romance; then these two will fulfill your needs. 

Kinda similar in mecha styles and the way of the worlds living scenario. Possible world destruction with another race being the cause. 

If you thought Gravion was good with the meka's combination and a bit of a story line wait until you watch Aquarion. Like Gravion, Aquarion meka's are based on combination, however Aquarion has a bit more of a story line behind it ^_^ 

Same feel to it. Great graphics and same ingredients but Aquaring has more Power rangers style because of the teamwork stuff... 

They're both space centred and in a distant future. They have both humongus machines, even if Basquash! is a sport anime and Sousei no Aquarion is a action anime. A tad of romance wich is not realice until later in the series and funny main characters. In the end they both have to save the world ;) 

Both deal with gundum looking machines and Both deal with angels attacking. 

Not really the same storyline or anything, but they both fall under a couple of the same genres. Which would be mecha and romance. 

Both shows are about Mecha (robots), Action and Romance, both have a boy who was living on the streets becoming invaluable when it came to piloting the robots, both are english dubbed so use same or similar english voice actors for both shows so if you liked one you'll definately like the other ^.^