It is indeed stupid to use a 6870 to present CPU limitations on gaming benchmarks. But then again I expect nothing less from PR slides.
As to being fake, I am not sure, but if Bulldozer lands between 2500k and 2600k overall I would not call that fail. Fail would be slower or equal to 1100T.

There will be room to develop this new core. I see most of its weakness being IPC performance, with the proper tweaks it can improve greatly.