nordlead on 13 April 2010
I already sorta typed this in another thread. At most GoWIII would have shifted sales forward by 50-60k. Those 50-60k would have come out of week 2, 3, or 4 (or even later) sales. GoWIII did not lose significant sales due to a week or so of it being impossible to find a PS3. Prior to that week and shortly after that week PS3's were reasonably easy to find. Obviously they were still in short supply and it depended on the area, but if you wanted the game outside of that 1-2 week window you could find the system with a bit of leg work.
