And conveniently Nvidia paid Crytek $2 million for Crysis2:
http://www.kitguru.net/components/graphic-cards/faith/nvidias-2-million-crysis/
IIRC,it was not even given away with Nvidia cards either(could be wrong here). Each company has been paying millions each year to devs,so they can stick their shiny logos on games,
add their brand specific features,saying "hey! XYZ hardware is best for this game!". Ever seen how much films had Dolby or THX logos on them??
Honestly are you just trying to turn this into some conspiracy thread? I cannot run Mantle either(gone NV this gen),but since you have a Titan yourself and cannot run it you seem very worried/negative about it. If anything this seems like an AMDMatt Mantle thread but in reverse and TBH we could do with sticking the weekly Mantle threads into one giant one anyway,otherwise we will end up with another one if a magical Mantle driver is released which actually works properly,saying its the bestest thing since sliced bread,then another one when invariably it gets broken for another one,say its the worst thing since cold Haggis.
TBH,I also don't see the big deal you are making about it - if Mantle runs crap for someone having an AMD card,they can switch to DX11 and if it dies then it dies. Meh.
It gave MS a kick up the arse so they could push out DX12 quicker which for me is more than good enough,especially when Intel is making demos like this:
http://www.bit-tech.net/news/bits/2014/08/14/intel-dx12-demo/1
Invariably you will disagree and say how 200% wrong I am but I will leave you and the others to start going round in circles as with all these threads.