Sorry bud but ESPN NFL 2K5 on Xbox is kicking the crap out of Madden 2005. I have NFL 2K5 and love it to death, I used to play Madden but each year was the same game with nasty PS2 graphics (EA won't bump up the graphics for Xbox titles). However, NFL 2K5 has improved gameplay and the graphics were meant for Xbox...mmmm, normal mapping wrinkles in the shirts.
Plus the production values are incredable on 2K5, they really took their time on this.
Oh and the $20 price tag always helps.