It's competition between two, so what you do expect? specially friends who have known each other so there will be a lot of trash talking and what not. And for sure, they want to beat each other, in a P2P battle.

I think it's enough to return what ever he wants to his friends. And at the end of the day, most likely they will still be friends. It's that their fiercely competitor and just like in any other sports, you have to beat the other guy no matter what.