I get a kick out of montanna now. over the years he was constantly introduced as the greatest QB of all time, and he accepted those accolades .

Then a year ago brady wins his 5th superbowl, and everyone(including the fence sitters) start referring to Brady as the greatest

So Joe was asked in an interview after that.....if he thought Brady was the greatest.....and he came up with the line....How can you compare eras?......and he named QBs from the 40's and 50's and said its impossible to say.

which is funny because all those years he accepted the miniker of the greatest. Now all of a sudden in his mind you cant compare eras.