Overpowering genpress tatics

How come some of the counter genpress tatics are so overpowering?. Its kinda ridicolous, had a friend use a downloaded tatics in our game, now he is unbeaten in like 63 matches…Takes away the fun. And its some cornerthing goin on too i think, one of his CB now have 16 goals from coners….not fun anymore. Is it just a thing?

Whats the tactic hes using?

Gegenpress is quite OP in this years aswell as last two/three iterations 

Named “GYRM Swansalona” something….is there something like a corner bug, so many goals by corners first post.