Baltimore just doesn't have the firepower to hang with the Colts
When you're going 3 & out on offense, it makes it a lot tougher for the defense to try and keep holding it down. I don't care how good the defense is, if they're out on the field for an inordinate amount of time, they're going to get worndown.
You can't give a guy like Peyton Manning numerous opportunities on offense or eventually it'll kill you. Baltimore's offense needs to keep moving and keep the Colts O off the field for any chance of them winning.