HOCKEY. Where else do you have guys 5'5 160 skating at a high speed only to run into a brick-wall defenseman that goes 6'3 245? I would say the contact may compare to the NFL in that respect, but when you throw in the boards, there is no comparison. I'm a huge fan of open ice hits, but some guys just crumble against the boards.
Plus, the whole face is exposed. Rarely is there a game where someone doesn't get broken open and have blood drip down his face.
Finally, I rarely see NFL, NBA, or any other sport have guys out there with stitches on their face, broken jaws, black eyes, etc. They normally sit out.
SO yeah, HOCKEY it is!!!!!!!!! No question.