I really don't know how else to say this. I already posted evidence with the starcraft screenshots but I went ahead and took screen shots in 5 different games @ 1920x1080 which is 16:9 and 2560x1600 which is 16:10. I couldn't do 2560x1440 (16:9), i'm not entirely sure why. But the images are still 16:9 vs 16:10 nonetheless. You gain NO vertical view as these games have their vertical view LOCKED. The way it works is that it scales the resolution up rendering the same image, just with a larger amount of pixels. So when you use more pixels to render an image vertically, you also have to do it horizontally.
So let's say 1920x1200 vs 1920x1080. Games that have their vertical view locked will just scale the image up to the 1200 vertical pixels so you see the same thing vertically. You can't scale the image just vertically, you also have to scale it horizontally but both resolutions have the same 1920 width. So the the game can't render anything past that and it get cuts off. If you don't understand what i'm saying then here are some pictures.
These are only from a games stand point, 16:10 is better at everything else aside from media and games. Media won't fill your whole screen, they will show black bars.
How are these images for weight?
I'll mention again, I don't know why I couldn't do 2560x1440. Might be because that resolution didn't exist when the u3011 was released or not, not even sure. At any rate, 1920x1080 is 16:9 and 2560x1600 is 16:10.
Call of Duty Black Ops II
1920x1080 16:9
2560x1600 16:10
The vertical view is exactly the same despite having more vertical pixels in a 16:10 format. But look at the patterned wall on the left side and the orange glass visor on the right side in the 16:9 shot. They are cut off of the view in the 16:10 shot.
Far Cry 3
1920x1080 16:9
2560x1600 16:10
The vertical view is exactly the same despite having more vertical pixels in a 16:10 format. In the 16:9 screen shot, you can see more of the mountain and the plant on the left side, which is simply cut off on in the 16:10 shot.
Dota 2
1920x1080 16:9
2560x1600: 16:10
The vertical view is exactly the same despite having more vertical pixels in a 16:10 format. The UI elements are shrunken down. You can only see half of the shopkeeper in the left side of the 16:10 shot but he is fully visible in the 16:9 shot.
Borderlands 2
1920x1080 16:9
2560x1600 16:10
The vertical view is exactly the same despite having more vertical pixels in a 16:10 format. Gun and rocks on the left side are cut off in the 16:10. Visible in 16:9.
Dead Space 3
1920x1080 16:9
2560x1600 16:10
The vertical view is exactly the same despite having more vertical pixels in a 16:10 format. List on the left is cut off in the 16:10 shot. Visible in the 16:9 shot. Also refer to the train thing on the right. Cut off in 16:10.
It sucks for 16:10 users but it's not enough for me to ditch my 16:10 monitor.
Edit : Since OP just wants it for SC2, here are Sc2 screenshots at 16:9 and 16:10 even though I already posted a gif up there.
Starcraft 2
1920x1080 16:9
2560x1600 16:10
The vertical view is exactly the same despite having more vertical pixels in a 16:10 format. UI elements shrunken. Distance between gas geyser all the way to the edge of the screen is longer in the 16:9 shot.