when I say damage isn't a criteria in judging a fight, I mean over all. people like to say, "well look at his face." some people bruise, cut and bleed easier than others and the state of someone's face doesn't necessarily tell the whole story.
I don't think Hendricks controlled the whole fight like a lot are saying. they both have times where they are in the pocket, take control of the center or back pedal. for the most part they are both engaging. gsp has the advantage once they start striking from the outside but in the clinch Hendricks had the advantage overall. when Hendricks closed the gap he was successful but not from the outside. their wrestling nullified eachother but George had 3 takedowns and Hendricks has 2 overall.
Not to mention damage that doesnt show externally, like a damaged rib or ruptured spleen. Can't really do a fair assesment of damage when you cant see and quantify all of it, so they dont use "damage" as a stand alone indicator.
Also I like your break down of the fight, but still I give that round to Hendricks since he did a good job of relocating GSP in the clinch, and thats about the only cage control that happened that round