I totally agree, this is seriously unfair.
I went to GAME yesterday and thought I was buying season passes for both PS3 and Xbox 360 versions of the game. Turns out it was just MS points and credit for PSN.
But I had enough points to get it for the 360, but despite it costing £2 more for the PS3, I get home and find that I'm expected to pay another £7! WTF???
The pass costs £9 more for the PS3 than the 360. WHY IS THIS???
Noy only is this unfair in itself, PS3 owners have also had to put up with the freezing, lag, and other issues, not to mention the possibility that hackers may take over the game like they did the others.
I for one am not paying £41.99 for the pass. In fact I'm serously considering returning the game to the shop for a refund due to the freezing issue.