You are right about Tyler and right that it was from before my time, but there were no forfeits in Sherrill's time; he was actually the beneficiary of a forfeited win over Alabama. Include the forfeited games, and Tyler's winning percentages were .580 and .380, almost exactly the same as Mullen. He also had some ups and downs, winning 4, 9, 6, 9, 5, and 6 games, i.e. there were times throughout his tenure that you could say he was slipping. The same was true for Sherrill; you might have concluded he was slipping when he won only 3 and 5 games his 3rd and 4th year after winning 7 in his first two.
The problems generally relate to consistency and logic. For example, you take issue with losing to Auburn this year because of their record from last year. But this isn't last year; Auburn is a quality team this year. Sherrill certainly had bad losses, too, and my guess is that the same is true for Tyler. And Mullen beat #25/20 Ole Miss during his first year; you are either arbitrarily choosing the top 20 rather than the top 25 and/or choosing the poll that meets your needs.
Would we like Mullen to do as well every year as we remember Tyler and Sherrill doing based on their best years? Sure, but that isn't reality.
The problems generally relate to consistency and logic. For example, you take issue with losing to Auburn this year because of their record from last year. But this isn't last year; Auburn is a quality team this year. Sherrill certainly had bad losses, too, and my guess is that the same is true for Tyler. And Mullen beat #25/20 Ole Miss during his first year; you are either arbitrarily choosing the top 20 rather than the top 25 and/or choosing the poll that meets your needs.
Would we like Mullen to do as well every year as we remember Tyler and Sherrill doing based on their best years? Sure, but that isn't reality.