I would say the PS2 version's Dynasty Mode (and therefore the PC version's Dynasty Mode when it is released) is a bit of a letdown for me personally because not much, if anything, has changed. However, the Xbox 360/PS3 version is a different story in my opinion with the new negotiation mini-games and "push" approach.
Of course, the simple fact that the PC version has the ease of exporting boxscores to text files and easier means of sharing screenshots and that version has not been released yet probably has a lot to do with it as well.