Nice point.
IMO people on this board have vastly overrated the second tier of pass rushers in this draft. Guys like Brooks Reed, Sam Acho, etc. were likely much lower on the Cardinals board than Ryan Williams and Rob Housler.
Caveat: I didn't want to draft PP7, but that said I can agree that the guys is dynamite and will instantly improve the tackling and playmaking of our defense.
There was a reason that I wanted us to take Robert Quinn; IMO he is going to be the best pass rusher in this draft and Mike Mayock even said that if he meets his potential he will be. After Quinn, the fall off to Brooks Reed, Jabaal Sheard, etc was massive and the team didn't feel that any of them were as good as Ryan Williams is.
What Williams brings is an ability to make something out of nothing. Watch the tape of him in 2009; no RB on our roster has that ability. Wells and THT are both straight line runs who don't have the creativity that Williams brings. I wouldn't doubt that when Whisenhunt and the staff watched game film of our team that they saw many runs that our backs lost yardage on or gained a few yards that a better back would've produced more. Now we have that back on our team, and with THT and Wells still on the roster we have a nice blend of different abilities.
The lack of production from the TE position is likely due to the underwhelming talent we have there. After playing teams like GB and the Saints the past couple of years and getting burned by their TEs and having to scheme around them, the Cardinals decided that the need for an offensive playmaker was greater than the need for a third tier passrusher (Sam Acho? Bleeeech). The guy I liked best at our 3rd pick, Nate Irving, went off the board a few picks before us. IMO he was the only ILB worthy of a 1-3 round pick. And even if you liked Sheppard better he was gone too, so by that point in time we had little choice to address our OLB or ILB needs.
In summation, if we really wanted to draft a pass rusher, the best spot to do it was at #5. And arguably we got a better prospect than any of the pass rushers available.