There is no chance of the same happening with AMD and TW3, since at least at the beginning of 2014:
According to Nvidia, developers can, under certain licensing circumstances,
gain access to (and optimize) the GameWorks code, but cannot share
that code with AMD for optimization purposes.
See [2] for the source of that statement.The situation is really that different.
[1] http://www.eurogamer.net/articles/2013-03-07-nvidia-apologis...
[2] http://www.extremetech.com/extreme/173511-nvidias-gameworks-...