Wouldn't that need to be Radeon increasing R&D to hit the GPU side? I just hope they spend it wisely before this bubble bursts. Since high end GPU's have outsold midrange on the Steam survey for the first time ever.
The Vega sales growth is higher than the 580 or 570 for end of the month.
The last column should be YTD. The Vega outpaced the YTD falloff. Granted is a very small chuck of data, and probably not a perfect interpretation without revealing actual sales.
http://store.steampowered.com/hwsurvey/directx/
Are you sure every user? I have talked to a lot of people that never get polled about hardware. Steam won't release their survey numbers even to hardware manufacturers.
If the survey was automatic every month for every user, it would be very very accurate.