Do you honestly think that every single time you have a 4th quarter comeback, it means your were ineffective in the 1st 3 quarters? What if you're in a shoot out or your defense isn't playing well.
Here's a single season list of 4th quarter QB's.
https://www.pro-football-reference.com/leaders/comebacks_single_season.htm
The Colts went 14-2 that year, 2009 and went to the Super Bowl. Manning had 7 4th quarter comebacks. Was he ineffective in the first 3 quarters in those 7 games?