Originally posted by Two Simple
Honey, you don't survive battle on something heavy and unflappable. The energy plays a role there, as well--it's called intimidation (not to mention getting out of the way in a hurry ...). And that's why the training and control of all of that energy is so important (control by both the horse AND the rider, hence temperament with athletic ability is important).
But I don't think the historical origins have any bearing on this discussion, because we aren't living in history, we're living today. If competitive dressage has morphed into something a little different, so be it--it is what it is, take it or leave it. Which you seem to be having trouble with, alas.
I still think that's a pretty spectacular horse.