Well Homeless, most would agree with you. Davis has proven himself in the past. But, Spurriers offense will not put up the numbers to allow Davis to get the ball. If you can't pass, you cant run.
They are going to find themselves down in a lot of games this year, and that means abandoning the running attack earlier than most teams would.
Henry is the pick to go with, they have Bledsoe, Moulds and Price. So, Buffalo can spread the ball around, and that will allow Henry to be more involved from start to finish, as to where Davis will be involved in the first half and will be a non-factor in a most of the second half.
Go with Davis if you think he can get you 100 by halftime.