Momentum in a football game is not measurable as a stat, but it exists as surely as Gatorade baths at the end for the winner. In the last 3 games, one team got rolling with momentum, and it became like a snow avalanche roaring down the hill.
But, and some of our fans will want to censure me for saying it, I also believe that in all three cases, the best team won the game, and would still have won even if the games were closer. (Yes, that means that LSU's 2019 "Best Team Money Can Buy" was in fact better than us. Deal with it.)