The Craig fumble in 1990 for a couple of reasons.
1. The1990 team was far more balanced (offense/defense) than the 2011 team and was built to win the Super Bowl. The 2011 team was really not. The defense completely carried the offense.
2. Had Craig fumbled a couple of plays later, the Giants would have burned through all their timeouts and the 2 minute warning and the game would have been over, well mostly over