I don’t think anyone but Ludia know’s exactly how the tournament battle matchups work… well perhaps they don’t even know either but either way. It’s been discussed and or mentioned before that a lot of the time when you are going into battles with a team ferocity way below what the game wants you to bring (programmed to expect). Then there might be something in the programming that says something like (these dino’s are not worthy of competing in current league and position, send in the high level clean up crew to crush their hopes and dreams).
In short, if you keep bringing very low ferocity teams into dom the game will eventually start giving you very difficult battles that are basically un winnable without a lucky exploit. This is supposed to encourage you the player to bring better teams.
At least that is kinda the theory i suppose.