I wrote about The Witcher series been The Witcher II the last PC game and TW3 a port to PC because this affect the performance and optimization of the game in PC (Nvidia or AMD). I didn't say a word about Nvidia or AMD. Speaking about AMD on consoles and in PC: If AMD hardware on consoles was an important factor for us AMD GPU PC gamers the things will be very different in PC ports but the facts show us that the REALLY important factor is the software. In the software department Nvidia GPUs has the lead and by a LARGE margin. A better hardware (AMD GPU) with inadequate software (AMD driver) can't surpass the performance of a worst hardware (Nvidia) with an optimized software (Nvidia drivers). Gaming experience and market share clearly reflects these facts.