i mean no hachibi chakra at all, just pure kenjutsu vs taijutsu. this isn't really a typical vs match up.
Im leaning killer bee just because he is overwhelming
Ah, in that case i'm not sure. But I do know Gai wouldn't be blitzing Bee because Bee is use to A's speed and was able to intercept A from attacking Naruto. Gai at 7th gate speed doesn't look to be on A's Lightning armor version 2 speed from the fact that he never blitz Kisame like A did Sasuke. If Gai gets too close then Bee's Lightning blades would cut thru Gai's limbs or weapons.