That is what the anti-Stubbs bandwagon has been trumpeting since he hit his first HR with the Reds. Right now he is on pace for a 41 HR season, while that isn't likely to happen, I don't see any reason why he can't become a 20 HR guy.
With 8 hrs in 32 games I think pitchers will begin to pitch him a little more cautiously. When that happens his OBP is going to increase. I don't think it is all that unrealistic to expect that to happen.
Don't really see any Corey Patterson comparisons, except for the anti-Stubbs bandwagon who find it fun to compare him to one of the worst players in baseball.