Not even close to the biggest in football history, yet alone sport history.
Really? This would be a MUCH MUCH bigger upset than Jets/Colts or Patriots/Rams, which are the only two games I can see even giving a Giants Superbowl win this year a run for the money.A Giants Superbowl win would EASILY beat any of these:
US Hockey Team defeating the Russians
Buster Douglas defeating Mike Tyson
Bobby Fischer beating a computer
...really, anything you can come up with.
If the Giants somehow pull out a victory in this Superbowl, I would honestly be more shocked than if a flying saucer landed and all the aliens looked like Eli Manning.
Giants beating this Patriot team would be like a little league team beating the Red Sox in a 50 game world series. It just won't happen.