I'm sure you said the same when Nvidia brought out the 600 series months after AMD brought out the 7970
Silly thread-crapping aside- where the hell are NV, and we assume AMD, getting all these efficiencies gains from on the same process node? Is it simply the increased caches to reduce hits to memory and allow lower bandwidth?
At this point I would be happy with a full-on NV maxwell flagship at 28nm. We would assume at same wattage a ~30-50% performance increase, right?