orcs compared to men

[Phervasaion]

I always perferred to look at as the evolution of evil.
EVOLUTION CHART:

goblin---orc---URUK_HAI

Yes that is what usually think of aswell. I also thought that orcs were considerably weaker than men because the men simply have alot more training than they do. Whereas orcs are just given a sword and thrown into battle, men spend alot more time training.
I could be wrong though.