Originally posted by norrinradd43
Sinister toyed with demons during his first appearances
he's been powered down a bit since his original appearances though.
Bottom line here is that while sinister's durability is pretty high (nothing's really ever been able to put him down physically) An attack on the soul via hellfire isn't something he has a defense against. mutant powers or not, he's still mortal.
GR on the other hand is totally immune to and/or will just regenerate from pretty much any non magical attack. The GR that was possessed by the Brood was the Daniel Ketch variant- not the current, so it's not really applicable here. (not that sinister is sitting on a batch of brood eggs or anything..just making a point.)
GR has the edge here.