Before the NFL outlawed defense and made everything a penalty the top QB's would average around 30-35 TD's a season (occasionally you would get one or two throwing over that but not often). With improved defense this year (and virtually no PI/illegal contact calls) these numbers look like one of those seasons. Brett Favre's final season in the NFL he threw for 11 TD's and 19 int's in 14 games, the year before that he had 33 TD's and 7 int's. IRL it's not completely out of the question for a 39 year old QB to have a huge drop off. Again I am not saying anything is fixed, just saying you can't judge based off one season.