look at it this way, big bulky celtic got his ass handed to him ultimately by one ******* alien(even though yes it's pretty well excepted that celtic was a much lesser skilled youngblood), wolf (much leaner and faster) kicked so much alien ass it really wasn't even funny, and i'm willing to bet if the P1 or P2 pred met some aliens, they'd be fuckin em up too, and at least from what we know P2 got at least one alien, which is one more than celtic.
im sorry, i do not want to offend any larger individuals, but i doubt any predator would let his gut go, or pack on so much muscle mass that he can't even use his arms. it's just silly. there's a fine, but definite line between a warriors strength and speed, and a body builder who, sure could lift you and throw you if he had the chance, maybe land a big slow punch if it's opponent just stood there, but that much muscle don't mean **** when you're against blades and spiked tails and razor teeth and claws, only skill, perhaps mixed with the appropriate arsenal, will save you.