Bowling action itself, the run ups are pretty bad too but I am more concerned with the actions. I watched the official IGN video and also a user posted one. I do notice there is a difference in actions but you have to sort of focus to see it. In real life the differences are extremely obvious.
Take a look at this game from 99:
It's bowling action is way smoother and realistic than any action in Ashes cricket.
No I have not played the game. And yes you are trying to watch the ball but as far as the overall feel and presentation goes, the bowling action plays a huge role.