That's not a very fair fight. Zaraki would finish this quickly. Someone said "Chidori could probably deal some decent damage, not much survives having somebody's arm through your chest." Zaraki would shrug that like it was nothing. Remember Zaraki VS Tousen? Kakashi's dead.
Zaraki never finishes anything quickly, he enjoys the fighting too much. As for Zaraki vs. Tousen, I do remember the fight. However I don't recall Tousen sticking his arm through Zaraki's heart. The fact that Zaraki can eat a lot of dmg doesn't change the fact that Chidori is a killer move.
As for Goku, I left him out on purpose. He levels up every time an enemy arrives that's stronger than him. If Goku fought Zaraki Kenpachi, he'd hit SSJ5.
Here's what that looks like:



...nuff sed