Here's how I see it:
93 flex vs. 92/94 Kevin:
Front double bi: Flex -Kevin's arms did not look as good from the front directly as they did from the sides.
Side chest - Kevin - not much needs to be said here.
Front lat spread - Kevin - Kevin was visibly wider than flex, and had great quads to boot.
Rear lat spread - Kevin easily - this was flex's worst pose.
Side triceps: Kevin - probably his best post.
Rear double bi - easily Flex - who has probably more detail in 93 than anyone in this pose.
most muscular - Flex - better detail and muscle shape than kevin.
Ab and thigh - Flex - few could match flex in this pose, and Kevin's abs were not a strong point.
Verdict: pose for pose its a tie, but Flex had better symmetry, so he would probably take it.
but it would be damn close.