Super Bowl XLIII: Greatest Ever?

In two straight Super Bowls now we have seen the greatest play in the game’s history. Last year it was an unknown Giants wide receiver named David Tyree who caught a pass from Eli Manning with the ball somehow pressed against his helmet as he tumbled to the ground on a reception that still defies explanation. And now James Harrison, a player no one had heard much of until two years ago, when he suddenly blossomed into a star linebacker for the Steelers, jumped in front of a Warner pass at the goal line and rumbled past lunging, stumbling Cardinals and into history as he plummeted breathlessly into the end zone 100 yards away in what must be the finest feat of endurance we have seen in a game like this/ Washington Post .

Question: Can the 2009 Super Bowl be rated as the greatest ever?