As for caps, I think they should be based at least SOMEWHAT based on what side shows up in higher numbers. As in, X has 10 people, so they are capped at 10 points each, Y has 5, so they are 20 each. Each side can score 100 points (obviously use higher numbers).
In a way, it even makes LORE sense for score caps. Yes, some characters WOULD be stronger than others, but they are still ONLY human. One man couldn't beat an entire army by themselves.