Not much, yet. One could argue that, for this game, the spread has adjusted for these biases (leading to a Patriots pick) or that this trend will continue (leading to a Giants pick). Below is a graph of these spread trends for both teams:

To avoid my emotions and trend biases from hurting my Super Bowl pick, I consulted my statistical model as I always do. This model is built in the following way: 1) considers offensive and defensive strength patterns, 2) builds team rankings according to historical scores, 3) adds a home field advantage, 4) creates an unbiased prediction of the spread, and 5) creates a prediction confidence or probability if you will (compares this prediction and the current spread to its performance in the past). A bet or wager (and the amount) is placed depending on the confidence of the prediction. Below is a graph of the offensive strength of these two teams in the past 8 games. It shows the Giants very effective running game and the Patriots #1 passing game:

Super Bowl Pick
For the Super Bowl, the home field advantage was removed, i.e. I subtracted the 2.7 points the model was giving to the home team. The model results are not as opportunistic as I have seen in other situations. Still, there is a slight advantage for the Giants to keep the Patriots close enough from the 11.5 spread we currently have (that would lead me to wager a lesser amount in order to keep my winning returns over 100% for the year, money management mumbo jumbo). The model predicts the game will end with the Patriots winning by 9 points. That is 2.5 points below the spread. For the previous 10 years, this situation (where the spread is more than 9 for a team, but the prediction is 2.5 points less) 57% of the time it has predicted this correctly. The majority is favoring the Giants and the line has dropped significantly. I do not like bets where I side with the majority, but my trading plan does not allow me to go against my predictions.
Below is the table I usually display with picks and past performance:

Giants +11.5
Good luck and go Giants!