I don't agree with this. I am uncertain of how old you are or how long you watched Troy but when he was young, he was actually a very athletic player. Later, after the hits etc, he was not nearly as athletic. The problem is that because he spent so long in the timing offense, there was very little opportunity for him to use a lot of that athleticism in the game. I like Tony but I don't think he was as superior athletically as you might think.
Tony doesn't really throw a great deep ball either but maybe a little better then Troy. However, Troy could throw into windows with much more accuracy and had the arm strength to beat the defense before they could react. If Tony had played in the same era, he would not be nearly as good a QB because he does it by throwing guys open. In those days, the game was much more physical and that was much harder to do.
