Some interesting stats there ZRod, thanks for posting those.
My take on those numbers is that Adrian is obviously lower in every category, but not by much in the rushing category. It is pretty telling if you look at total touchdowns accounted for however, look at Tommys total TDs compared to adrian, especially in the passing category that surpises me that Tommy had that many more. Adrian sure isn't accounting for very many touchdowns compared to the other two QBs shown here, so my question is who should be getting us more TDs to offset this? Now I do see your disclaimer of 3 less games played so yes, you do have to take that into account, however this offense is basically the kind that Adrian is involved in just about everything, we go to him for the run game, the pass game, everything is based around Adrian, where with the other two QBs it may have been a little less so at times based on who they had surrounding them...
If you look at back at who each of these QBs had for a RB, Taylor had Burkhead and Tommy had Ameer, and these two previous QBs STILL had more TDs than Adrian, that alone tells me Adrian needs to step his game up in a pretty big way, or we need another Ameer and an O Line to offset the lower production from QB. JMHO.