Looking back at my tweet now it has missed the first part. I posted the link to what I was asking and then continued to ask if dx11 had more performance to give.
I asked Roy about 'all this' privately. His response was not what i was expecting TBH.
Turns out he knows the guy at Nvidia who does all their this marketing stuff, he said the man is pretty good at what he does. effective at his job.
About all this DX talk, he didn't say much of any use. if anything, other than alluding to Mantle having a profound effect amongst developers.
To me, this is perhaps why MS and Nvidia suddenly seem to be loosing their heads on what looks like damage control.
AMD seem pretty calm and quiet about this, i actually tried to get him to think about them responding somehow, he didn't batter an eye lid.
The thing is why would AMD respond? to get into a war of words and slides?
I think they expected this, with everyone around them is shouting for attention, AMD just quietly do.
The only other thing he said to me was all Developers also know this Nvidia PR guy, and know how good he is at what he does.