Is it too much to ask you for some context to your misleading stats? Lots of teams run between 70-75 plays per game.
Michigan was 65th with 70.3 plays per game in 2021. If they ran ONE MORE PLAY per game, they jump to 55th. With TWO MORE PLAYS per game, they jump to 42nd. THREE MORE PLAYS per game puts them at 35th. FOUR MORE PLAYS per game puts them at 29th.
Given that Michigan was ahead in most games, it is very easy to envision that they might have played some conservative "run-out-the-clock" football in the 4th quarter.
For comparative purposes, Georgia ranked 119th. Cincinnati ranked 123rd. Of the CFP teams, only Bama ranked higher (12th).
Miami ranked 24th.
Miami had 5 plays more per game. Miami finished 7-5, Michigan finished 12-2.
Maybe, JUST MAYBE, Gattis is right in the ballpark. 5 more plays per game is not crazy impossible.