I use maya and other stuff too, and have had 2 monitors before but they were the same ( same brand, same max resolution etc ) on an Nvidia graphics card. What I'm seeing with your screenshot might be an effort to " tile " the stuff ( I know it sounds weird but it looks like it to me ). I dont know what graphics card you're using and I am sorry but I dont have cs6, cuda, and 2 monitors now.. so I think someone else here would be better to help you with at least dealing with this aspect.
The way maya dealt with 2 monitors was slightly different than the way PPro did.. I could grab 'windows' off PPro ( timeline, effects etc ) and drag to 2nd monitor and do my workspace that way, then save that workspace etc. Maya was more like putting 'separate' menu items on the 2nd monitor...like " attributes, shading etc " .. know what I mean ??? Is different.
So get stuff working with one monitor is a suggestion I'm making only because it eliminates ONE variable in a problem... kinda like a controlled experiment.. you try to limit variables and come up with the solution that way ?? Sorry, but that's how I see this one of yours.
ps.
your screenshot is different than my 2 monitor screenshots used to be.. .my 2 monitor screenshots used to be a combination of both screens..like way wide ( not 16:9 but wider ).. like a combination of the 2 screens... that's another reason I think something is whacky with the monitor thing. Maybe other people have different views on this ??