Intellect: Yeah, Bayonetta is way smarter than me, and has at least 500 years (more if she was born a long time before she was locked away) worth of knowledge and experience on me.
Result: I lose.
Skill: Depends what skill. If we're talking firearms shooting, sword fighting, ice skating, whip slinging, grenade firing whilst spinning around in circles and general agility and grace, I think Bayonetta has me. If we're talking about sandwich making, then I might have a shot. I make a mean sandwich...
Result: I definitely lose.
Fight to the death: She whips off her clothes to form massive hair demons that can crunch, tear, bite, headbutt and stomp foes to death.
Result: I couldn't lose more tragically, or more messily.
Shame though, if we're fighting then that must mean that I'm an Angel. I don't want to be an Angel (unless I got to touch her), and that has nothing to do with religion, I just would really love to be an Umbran Witch. Awesome powers and a job that gives you a gorgeous body? Who wouldn't??
