And in each, there is the arcade and story mode but there isn't much difference in terms of actual gameplay between the two. (jgghgames.com)
So in terms of actual gameplay, there is no major difference to see. (playstationing.com)
As for my experience with the game, it hasn't changed much if at all, since PAX in terms of the actual gameplay; although, at PAX I was playing four player multiplayer rather than against AI with selectable difficulty levels. (thatvideogameblog.com)