Kelly was the reason we lost to PSU and ECU, and nearly lost several other games. He was terrible. Then Dorsey comes in and starts three games at the end of the year, breaking team scoring records, and people say, "Yeah, but he did it against scubs!" True, but had Kelly played those games we don't do anywhere near the damage we did with Dorsey.
Kelly played well against FSU, and Dorsey wouldn't have beaten them or VT in 99. Every other game, Dorsey would have been the better QB. Remember the BC game where Kelly couldn't hit the broad side of a barn for nearly 3 whole quarters? He got semi hot at the end of the game, but man was that ever a brutal performance until he did.
The QB position is far and away the most important on the team. If your QB sucks, your team is going to struggle. If your team is loaded, all you need is a QB that doesn't suck. That was us in 99. We were loaded, but our QB was terrible, and it cost us.