For once I agree with you. Any Wisconsin beer on me
I don't agree with either of you. Sure, at this point, it's rather moot, because we haven't seen anything from Bryant. However, if you're basing this off of Henry's performance against Oklahoma, bear in mind. This is the same (actually weaker due to injuries) Oklahoma defense that got torched by Atkinson. I'm not putting much stock into that performance since Atkinson looked better than Henry did in their respective matchups with the Sooners.
From a strictly RB perspective, I'd take Bryant no question. Henry is a freak, but so is Bryant, just a faster, more compact freak with the ability to catch it out of the backfield. Henry is more powerful, but Bryant is more diverse and dynamic. He can hurt you running or catching the ball.