Again, just witness the Mace feat I referenced. He blocks multiple blaster fire and point blank range. Jumps at least 5 stories down and blocks more fire while falling down. That would take incredible speed to execute.
Again with Sids and the blitzing of the masters. He's shown moving too fast for them to react. Sure we don't see blurry lines, but we can barely make things out in that scene and we see him kill them. Clearly intended to show his speed. There is no other way to kill 3 of the best the Jedi had to offer that fast, who themselves have enhanced speed-reflexes-and precog
I'd also cite the Anakin falling incredibly far and still having the strength to catch and hold onto a moving speeder. I'd say any elf who tried that would have their arms tore off.