I disagree with this. Outside of Alabama, FSU, 49ers, Seahawks, and maybe the Jets, there are not a lot of defenses in football that "give" wins. Football is all about the offense on all levels. The purpose of defense is to force a few punts, hold for a few FGs, and get a turnover or 2. That's good defense with the rules of today.
For GT to be successful, we have to be explosive on offense. No way about it. If we are very explosive, we win 9-10 games regardless of the defense. When we were good, we had stretches where we would punt 6-7 times in a month.