No he wouldn’t have. Of active coaches with more than 100 games he has the 2nd highest win percentage in the league. Both regular season and playoffs. You don’t fire “not as good as Belichick”. The last couple of seasons the team has been hampered by overpaying Ben, but that’s not on the coach. Just look at their 2nd half comebacks this year, Tomlin’s half time adjustments, with a roster that is mediocre at best, shows his skill. He’s a great coach. Also the Steelers are smart enough to be a patient organization. Cowher went 7-9 3 seasons in a row and they didn’t fire him.