Talkemada, The pro road season is from feb to october and they can race well over 100 days a year, for much more than 90 minutes and very rarely steadily! Also, when they crash, they hit tarmac, not grass and often continue.
Not saying pro football is easy, they are clearly very fit athletes, however I doubt their power to weight or VO2 max is anything on a professional roadie/XCer.