Kisame tanked v2 Bee's lariat, he was also able to counter V2 Bee with Samehada when he got blitzed.With all due respect, people who say Kisame and Sasori could win are not thinking straight. Sasori is utterly useless, none of his attacks are getting through the Raikages durability, therefore, his poison is also useless. Kisame can be a threat, but he can't react to V2 Ei and gets his head chopped off.
The Raikage loose at round 7.
A fused Kisamehada would wreck these two, and suck them dry of chakra.
Sasori's presence is enough to tip the scale in Kisame/Sasori's favor high-extreme high diff.
He's not perfect but he has bothersome attacks like 100 puppets and iron sand.
Of course, team lightning winning is possible as well. They probably win 6.5-7/10 times.