From memory this isnt about filling up 50gb. They wanted to keep it on a sinlge-sided disk to make it cheaper, so what they are saying is they have filled the 25gb. As in the past, I suspect they have skipped on compression they could have done (and should have done to save server-space and production costs) for PR purposes.
Remember, Sony reckons that Motorstorm couldn't possibly have been less than 22.....
starcraft - Playing Games = FUN, Talking about Games = SERIOUS