Lesnar vs. Kimbo would be fun?
only if by fun you mean quick and pointless.
Brock Lesnar would fucking destroy Kimbo.
Kimbo wont even win the ultimate fighter 10.
Brock is a beast, who's gonna beat him?
Too Strong, Too Fast, Too Accurate with his strikes.
Mir is the best BJJ heavyweight and he couldnt do a fucking thing against him.
Who's going to be able to?
No one.