While quite pretty and fluid most of the fights lack any real sense of 'weight' besides a few instances of Lancer jumping and leaving a crater and Berserker fucking up shit passively by merely running - beyond those, however, the majority of the Servant's didn't seem nearly as powerful as they actually are and the choreography gave no sense of them possessing any notable degree of skill or experience, merely super speed and the ability to pull of some rather unbelievable contortioning.
Was UBW a good adaption?
>most of the fights lack any real sense of 'weight'
This is why Zero was so much better, in a nutshell.
I prefer the action animation in UBW over F/Z's any day. The servants in UBW actually had movements that looked superhuman given the very snappy and explosive movements. The action animation in F/Z was slower-paced and more grounded but they didn't have the finesse to make it look like a skillful fight. The few melee fights mostly consisted of unimaginative parrying and dodging. In UBW on the other hand, the top animators played more to their strengths of making scenes with fast-paced motion and elaborate effects animation.