I remember Durante saying quite a while back that visually there wouldn't be any difference between a system with 5GB usable ram and 7GB (all else being equal). Given info per frame would be limited, the underlying operations can only get so large. I had thought that the extra 2GB would help with caching data for better load times.
Given the deed accomplished by 1GB gfx cards today, I am not worried for the moment.
However, all the anger surrounding this situation is clear: It's less about the potential ramification of the deduction and more about the perception of a greater number that most of us had assumed given the way the instrument has been marketed, especially given the fact that it received 100% jump in the amount from earlier leaked documents.
Yes, I am not sure I like Sony's behavior. Numbers are fine but they should be explained to consumers if you are going to benefit from them from a PR standpoint.