Not even just dbfz, most fighting games have rematches. Pretty sure smash does, street fighter v let’s you do a bo3, and Tekken 7 you can rematch as much as you want. I remember when I was first learning the game I played this one guy like 12 times, learning him more and more till I finally beat him once. As long as both people click rematch you can keep playing and it’s super nice to not have to reque and you can learn tough opponents. If brawlhalla didn’t have so many players this system would suck so much harder. Pretty much how it is at high elo already.