I enjoyed this game a lot, it's just about battling and not about the characters. If you want good visuals/story then watch the anime. If you want an accurate and enjoyable way to fight using different characters abilities, then play the game.
I wouldn't expect this game to be as perfectly polished as a dragon ball game considering that it's JJK's first video game and the anime is only on season 2. It is what it is, if you enjoyed the anime fighting games of the past you're liable to enjoy this one.