@Whimsicott 'nakama power'?
Basically a recurring element in a lot of media. I see it a lot in anime but superhero movies and other stuff has it too. When the "hero" or protagonist, the focus of that story in that particular battle has too much riding on them, they just HAVE to win. Not because they were better or smarter or more fitted. Sometimes they pull a deux ex machina by using small details that become increasingly important as the battle goes on, or they have a super secret strategy no one's seen yet. I call it nakama power because when everything the hero cares about (friends, family, the like) is in danger, he simply
can't lose because there's too much at stake. And I'll admit it's heartwarming to read or to watch, but in the case of a PvP, we can potentially understand the pov of both characters, even though we usually root for one. Sooooo if everyone abused nakama power, which I doubt will happen anyways, then the battles could drag out for a long time, because neither will "accept" the loss when there's real danger.