[Question] Comparing Performance of GTX gpu's

Has anyone seen a performance chart comparing say the GTX 580, 680, 780 running the same Rocket scene across the GPU’s where the draw calls, vert count, memory, and FPS have all been tracked?

I’m not aware, currently, of anything like that. I thought I remembered seeing some performance comparisons on the Rocket forum, but I can’t seem to find it.

*found it:
http://forums.epicgames.com/threads/970862-Installing-Rocket-on-a-low-spec-system