OpenGL slower than D3D on Nvidia GTX 750 Ti

[Kirono]

As the title says, OpenGL is PAINFULLY (~10 FPS) slow while Direct 3D is nearly perfect speed (~30/60 FPS[depending on game]).
According to the main blog post announcing 4.0 , OpenGL is supposed to be the faster of the two on Nvidia cards.
If so, Why am i getting the opposite?

Setup Specs:

AMD Phenom II 1100T x6 3.30 GHz
16GB DDR3 1333MHz
Nvidia GeForce GTX 750 Ti
Games loaded from Hybrid HDD.
Program loaded from 7200 RPM HDD

Windows 10 Pro x64
Dolphin 4.0-8165 x64