Apples and oranges. If you lose one game in football, you plummet in the polls no matter what. Our football team might turn out to be very good, but whenever you start out 2-2 you drop out of the rankings.
That does not happen in basketball. The basketball polls don't have crazy week-to-week variation. The polls are more about how good people think teams are and not so much about whether they happened to win their last game.