User blog comment:Master Sima Yi/Assassinews 04-06-'12 — E3 hub/@comment-5254145-20120608200936/@comment-5503561-20120608210703

Don't know about running, but observing his climbing in the Frontier video, it seems like they simply sped up the existing anims from previous game to compensate for his much more fluid movement, giving an illusion of greater speed.