While I think U7 will get the most attention due to them being the main universe, I also believe U7 in general has exceptionally strong fighters compared to everyone else.
Having 7 people in your 10 man team who surpassed Namek Saga Frieza (previously the strongest being in the universe) definitely helps. Shoot if they wanted to, they could've had future Trunks, Goten and Kid Trunks take the human spots and have a ridiculously OP team. But for obvious reasons, Goten and Trunks weren't able to compete. I was againast it at first, but after seeing the competition, it would've been a bad decision to have two children fight in place of experienced fighters. I̶f̶ ̶t̶h̶e̶y̶ ̶k̶n̶o̶c̶k̶e̶d̶ ̶s̶o̶m̶e̶o̶n̶e̶ ̶o̶u̶t̶,̶ ̶t̶h̶e̶y̶'̶d̶ ̶p̶r̶o̶b̶a̶b̶l̶y̶ ̶s̶t̶a̶r̶t̶ ̶g̶l̶o̶a̶t̶i̶n̶g̶ ̶a̶n̶d̶ ̶g̶e̶t̶ ̶k̶n̶o̶c̶k̶e̶d̶ ̶o̶u̶t̶. Thank goodness we have strong experienced fighters who'd never do that.
I don't mind seeing U7 take a lot of the KOs right now. I'm sure they'll show U11 getting some KOs soon as well. there are 80 fighters for goodness sake.