His stats are a reflection of the offensive style. I believe that Tom Brady would put up Manning-like numbers in Martz's offense.
Tom Brady would put up Manning type numbers with the Colts, Eagles, and Vikings too based on their style of play but that doesn't diminish Manning, C-Pep, or McNabb's skills.
Average pass plays per game last year:
Rams - 36.2
Vikings - 34.5
Eagles - 34.2
Colts - 32.9
Pats - 30.3
Obviously you need to be on an aggressive team to put up good fantasy numbers. If Bulger was on the Colts he would throw for 4000 every year too with that O-Line.
Manning doesn't get touched all year. Bulger was on his butt most of the year.
I think Bulger puts up some impressive stats with the lack of offensive line play.
It would be interesting to see how Manning handled some of that pressure. Not saying he wouldn't produce, just that I would like to see how he handled it.