This isn't supposed to be an amazing anime, so don't go into it expecting something like that. This is a non-canon promotional anime for Dragon Ball Heroes, and you can see that these episodes are produced to show off the ridiculous characters in order to make money.
This is honestly just something chill to watch if you're bored, there's no need to take seriously.
It's best to watch this show with your brain switched off so you don't worry about the nonsensical story and appalling power scaling.
Ultimately, Super Dragon Ball Heroes is just an excuse to watch our favorite Dragon Ball characters fighting, and the show is
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