How can other Mons even compete?

I mean really imagine in Z this guy gets a mega and it gets base stats of

HP: 80
>Attack:100
>Defense: 67
>Sp.Atk: 130
>Sp.Def: 103
>Speed: 150
>Total: 630

Smogon would have an absolute shitfit.

How could other megas even hope to compete?

Would this is officially break the game