I like to think Gaara would win.
Gaara has trouble dealing with speedy characters as shown during his fights with Rock Lee and Sasuke.He either gets speed blitzed by Ay or destroyed by Onoki/Tsunade.
Oonoki or Tsunade. Or Gaara. Or actually they all have chances at winning. First of all Mei would use kirigakure no jutsu which would make it impossible to see. It's all about luck.
who will win?
im gona go with A because he can speed blitz everyone
There are way too many variables that we have to take into account. I dont think anyone can really come up with an answer. For all those people who say onoki, what if the 4 other kage decide to gang up on him? Take out the biggest threat?