The players appear squarish and don't have a very natural look to them. The animation for the game is very jumpy and appears to be at a really low frame rate. Receivers never turn around to look for the football; it just seems to find their hands magically. The same goes for when a player picks up a fumble. I had a play where my running back picked up a fumbled football just by running over the ball. He never had to even slow down or lean over to pick it up, it just hopped into his hand.
One positive thing I can say about GameBreaker 2003's appearance is that they seemed to get some stadiums more correct than other games have done. LSU's Tigers Stadium is almost perfect. The only thing that was missing was the 'Welcome to Death Valley' sign on the press box. They even seemed to have the Louisiana Lottery logo on the scoreboard!
The sound for GameBreaker 2003 is nothing spectacular. They don't have real fight songs, which is something I think is needed to capture the football atmosphere. The announcers are alright, but they don't let you feel you are watching a real football game. It seems every time my kick returner touches the ball in the end zone, Keith Jackson will say 'He could go all the way.'