Emmitt nor Troy ran the routes against the opponent's #1 CB for Irvin.
Emmitt nor Irvin made Aikman's passes as accurate as they were. Nor were they responsible for the Cowboys having such good defenses that didn't make it necessary for Aikman to lead them on record number of comeback wins.
Troy nor Irvin were Emmittt's eyes that gave him amazing vision to see the play develop. Nor were they the ones who gave Emmitt his heart that kept the "slow" RB almost impossible to catch from behind when he broke a long run. As for that O-line being the only reason the haters claim that Emmitt got the rushing record...if they were as great as the haters give them credit for, Aikman wouldn't have had so many concussions...now they WERE a great unit, but they were not the sole reason for Emmitt's rushing record.
None were overrated. If anything they are underrated when it comes to their places in NFL History. They were all surrounded by great teams. All had the heart and desire to win that pushed them to put in the hard work to be the best.