But you are totally leaving out the time factor.
Garrett had a decade, yes an entire decade and made the playoffs exactly 3 times.............so, 7/10 seasons we did not even make the playoffs, that is 70% fail rate if my UT education does not fail me here.
Big Mike has made the playoffs the same number of times as Garrett, but in only 4 seasons and the one season he missed the playoffs was the Covid year of 2020 when teams were not even practicing together. So, again, if my UT education does not fail me 3/4 seasons in the playoffs is a 25% fail rate.
You cannot say a head coach that fails to make the playoffs 70% of the time is the same as a head coach that fails to make the playoffs only 25% of the time. Yes, neither one ever advanced past the Divisional round so if that is your point then I will agree, but you are not taking into account that Garrett had 10 years and MM has only had 4.