Mu outlasts him with invisibility.
Take away swords or any kind of metal weaponry and he gets rocked.
Not sure who wins. Danzo managed to run a few steps before Sasuke could fire an arrow at him and that's also ignoring the fact that the arrow was already prepared. Mu is faster in my opinion considering he showed some superior speed feat to the Third Raikage in his base state. I think Mu can go invisible and maybe move slightly upward or something evading the arrow at least narrowly.
Then again, the Sharingan can anticipate one's next movement so it's hard to dodge. Lmaoo then again Sasuke did refer to linear movements so I'm not 100% sure.
What ?