I'd rather see Rakim verses Nas to be honest...but Nas has probably been on too many "hits", plus he's more current, so Rakim would probably get clapped up easy, lol. Still though, Rakim vs. Nas is the one I want to see.Ra would slaughter Kane. He needs to battle KRS.
I don't think KRS has enough recognizable shyt to survive against Rakim. You can find some 22 year olds who will recognize madd Eric B and Rakim jawns if you were to play them around them just because of how legendary and timeless they've become, in film/tv and just in music in general.
Outside of 2, possibly 3, Kris joints you can't do that with him...and even them joints they wouldn't be THAT familiar with.
But, for this battle it's not gonna be a bunch of 22 years old in there, it's gonna be a lot of 45+ who probably are familiar with both of their catalogs...so maybe it would be more competitive than I'm saying. . But yeah, gimme Nas vs. Rakim