I'm 113% and he is 105% and 1 level lower than me. But all my players have much better white stats and black stats close to 1%. So logically I shouldn't have any problems with this opponent
I've never been that much of a believer in mutants, at least in terms of differentiating teams. They're definitely exploitable as an opponent and you can easily win without them. Never understood the obsession with them as the game will still troll you anyway.