In 2010, Brady signed the biggest contract in NFL history w/ a record amount of guaranteed money.
The only G's and NT's Belly paid(That I'm aware of) were Mankins and Wilfork, 2 of the best of all time and completely dominant players. Belly takes big run stuffers who have underperformed elsewhere and gets them to play at a higher level and puts them in the best position to succeed. Shelton, Valentine, Alan Branch, no names. Several of them got huge contracts elsewhere, then busted.
You cannot do what Belly does w/o Belly.