Tyranids

Is Tyranids monster mash one of the worst armies to face for orks? Probably not, but I'm having a hard time getting around that they have; higher strength, higher toughness, better save, invuln save, higher WS/BS, higher AP, higher Damage and better buffs then orks across the board. Ideally if you have great datasheets you shouldn't also have great buffs and all that.

Orks only have one thing, numbers, and that isn't enough because I dont want to play green tide.