I had no problem with Bellichick's math. People over react because it is contrary to normal conservative football decision making and because it failed.
I thought the biggest mistake was not letting Addai score with about a minute to play. I was first and goal, and they stopped him at the one. That wasted alot of time. I felt if Brady had a minute of time, he could have gotten within field goal range. I have not seen anyone ever bring this point up.