As shown, the Olog-Hai has absolutly no possibility of doing complicated or intellegent moves, such as waiting for the Human to attack first. IT simply has one purpose: Kill the damn thing. It's going to try and attack it until it died, or until the Olog-Hai does. There'd be no stratagey, just brute, sluggish, stupid force. I feel if we only allowed Olog-Hai to do siege-damage, it'd kinda screw them over.
I don't think you understand what I meant. An Olog isn't patient enough to learn the finer aspects of fighting. They don't parry or counter attack, they just swing dumbly and hit hard, but not intelligently.
Thus, a regular Orc can often best a dumb Olog, unless the Orc's legs are impaired and the Orc loses its ability to move and dodge. It's a toss-up, depending on the terrain and enviroment but in general, Olog's have a disadvantage because the brute strength begins to have diminishing results and the lack of brain development doesn't help either.