Georgia's D forced Alabama to kick 3 FGs (in 3 red zone opportunities) in the 1st half. Tide left 12 points on the table. Also, Georgia's D did a great job against Alabama's running game, which finished with 30 yards on 28 carries (+73 yards on 24 carries before Young's -43 yards on 4 carries are taken into account). No Najee Harris in the backfield for Alabama, that's for sure.
Meechie was injured in SEC Championship, so Saban & Company were able to game plan for his absence in the CFP Championship. When Williams was injured early in the 2nd quarter, it allowed Georgia to completely ignore Alabama's vertical passing game. I told my wife "game over, Georgia will win" immediately after the play in which Williams was injured. In today's game, teams need WRs who can stretch the field when facing very good defenses. It's too difficult to try and grind out multiple 10-15 play drives against teams with quality defenses.