The main thing is if you're playing a team that is going for 2 AND getting them, you have to get on the bandwagon too.
It's not quite this extreme, but would almost be like saying "I didn't worry that we gave up 4 touchdowns because we had the strategy of kicking 10 field goals."
If they are scoring 8 and you are scoring 7, eventually you have to be able to score a lot more, like an extra FG or two depending how high scoring the game is. An extra two scoring possessions or scoring from the 3 yard line....obviously scoring from the 3 yard line has far greater odds and far fewer variables.