Unlimited Budget Works!!
They share ufotable's signature action animation that probably cost millions of yen to finance. If you've looking for more of the flashy, sparks-flying swordplay seen in UBW there's plenty in Touken Ranbu. In the end, they're both average fantasy stories that you'd probably watch for the stunningly animated action. Do take note that there is some CGI in Touken Ranbu though.
Do you like historical/battle action shows with AWESOME sword fights?
The main difference between the shows is that the world in Token Ranbu definitely has a touch of fantasy whereas Rurouni Kenshin has a realistic setting but if you like well choreographed fights and shows set in historical japan than give these series a try.
Swords, boys, light beams, intense action choreography, Japanese history, and both are based on games... these two shows are surprisingly similar.
Sengoku Basara has a brighter palette and a more positive feel, whereas Katsugeki is much darker. Outstanding action in both shows, Katsugeki being the more polished of the two with very good utilisation of CG.
Neither are exactly shows to watch for plot or character depth, but if you're a fan of the games or are looking for some fast paced shiny action fuelled by shouting, give Basara or Katsugeki a try.