Well you can't really judge them yet, unless you wanna judge by Triple H's cameo on Pacific Blue. Between the part where he acts like the bouncer he's supposed to be and the part where he actually SUPLEXES SOMEONE, I don't think he can act his way out of anything. I'd say the Rock is superior.
BTW, you think we'll see any pedigrees in Blade III? Maybe onto a pile of nails...