Brady is 4th because he lacks mobility or elusiveness at this point and outside of Belichick's system I don't have faith he could still be better than the other 3. In his prime Brady was equal to, and sometimes better than, Peyton.
Jets fan? Please. There's not a thing I like about any New York team except Tom Coughlin (but I do believe in Eli).
Peyton has such great mobility. Definitely deserving of #1
He collapses into the fetal position when rushers get close.