Pitt has played at Heinz Field for 19 seasons, not 20. In those 19 seasons Pitt is 135-105, a .563 winning percentage. In Pitt's last 19 seasons at Pitt Stadium Pitt was 101-109-6, a .481 winning percentage.
The notion that winning 48% of your games is better than winning 56% of your games is exactly the sort of thing that led me to call you stupid. And of course it once again shows that you simply do not know the history that you claim to be quoting.
But wait, maybe you just mean conference games. Well, we were only in a conference for the last nine years of Pitt Stadium, but during that time we compiled a smokin' .293 winning percentage. At Heinz Field that percentage is .576. Once again, one of those is clearly better than the other. Not the one you think though.
You know just as well as anyone the Pitt allowed the program to slip into disarray during much if the 90s. Using those years are simply not an accurate perception of the program's success in the late 70s and 80s. Pitt demonstrated that they can reach the top of the ladder in Oakland, and have not been able to even come close to showing that at HF.