I'm going to go with Craven here............for the following reason:
Carpenter has many great films (The Thing, They Live, Escape from NY, Big Trouble in Little China, etc.).........but none can come close to matching the greatness of the original A Nightmare on Elm St...........which is backed up by some pretty solid work by Craven like The Hills Have Eyes and Last House on the Left.
John carpenter is in his mid-fifties and pretty skinny - Wes is heavier but is 64 (and after you hit 60 it's all downhill.)
I'd say that despite being outweighed John C could outlast Wes in the stamina stakes, and if Wes goes down he's going to go down hard and not get up.
My Money is on John - maybe in the 3rd/4th round.
Halloween is highly over rated. It's a decent flick and all but there's not an original idea to be found in the whole movie. Crazy guy escapes mental institution and kills people............oooh the imagination it had to take to come up with that one.
Wes Craven put more thought into the wardrobe of the Freddy Krueger character than Capenter put into the entire script for Halloween.
A Nightmare on Elm St. is a horror masterpiece.......it didn't rely on any old concepts or gimmicks that have been done to death, it was unique.....and still managed to be one of the best horror films of the decade......
the only downside to NOES is the crap sequels that followed but you can't blame Craven for those........he refused to do them.