Tony Sparano and Joe Philbin, but I would ask who was the GM over the last 5 years?
This isn't rocket science. Jeff Ireland has been the Dolphins GM for the last five years. Anyone who says otherwise is denying reality. The Dolphins paid him as GM for five years. He cashed the checks. If you ask the NFL office they will tell you he has been the Dolphins GM for five years. For the last five years his staff of scouts gathered information on the players. He worked with his staff to create the draft board using the principles that Parcells taught him. The Dolphins drafted from that draft board. In a few rare and well publicized cases Parcells overrode Ireland on the draft choice (Pat White pick), but for the most part they were in agreement and the Dolphins' choice was Ireland's work product.
The offensive line is a testament to the Dolphins poor drafting and by itself invalidates this so called study. Two first round draft picks, a second round pick, a third round pick, and multiple highly paid free agents have resulted in an offensive line that is among the worst in the league. Now some will try to blame this on the fact that some of our linemen are not "prototypical" for the WCO, but I say that if Philbin is as good a coach as everyone makes him out to be then he should be able to adjust his system to optimize the strength of his "maulers". The fact that he wasn't able to do so says something about him as a coach that I am not certain many of us on the board yet want to concede. The fact of the matter is that we have spent an inordinate amount of money on the offensive line and it is not any good. We drafted the wrong players and the fact that they are starting invalidates the entire study.