A few points come to mind why it would take longer than usual..
1.)It has lots of replay value, unlike single player games like MGS4 with no replay value..
2.)Its an expansion, w/c means people who bought it has the original game and liked it. If it was a new game, there is a big chance someone buys it and don't like it..in turn they dump it fast on goozex.
3.)Their probably waiting for the points to go up.
