He did? Where?
He inherited a juggernaut in Baltimore that did finish 1st in points allowed 1x in his tenure, but which had also been top 6 4 out of 5 years (including #1 as well) before he took over.
The Jets? Defense started great (thanks Mangini) and was deplorable by the time he got fired. Buffalo? Even worse. Took over a top 5 defense and watched it drop to 16 within 2 years
I'll tell you who does think, make that I know someone who knows that Rex Ryan is the best DC out there, that would be Rex Ryan.
Ryan, calling the Ryan party of 1?