Wrong. Please name the game, dont talk in the air please.
Both points wrong. You don't have a 1440p monitor.
From the AT review (680 and 7970 respectively at 1600p):
Crysis Warhead: 31, 36
Shogun 2: 33, 28
Computerbase.de from here on
http://www.computerbase.de/artikel/...a-geforce-gtx-680/35/#abschnitt_serious_sam_3
Serious Sam 3: 30, 34
The Witcher 2: 35, 33
Anno 2070: 27, 35
Batman AC: 36, 30
BF3 (4xAA, not FXAA): 40, 36
Crysis 2: 30, 27
Dragon Age 2: 23, 21
Metro 2033 (4xAA, not AAA): 18, 20
Or look here:
http://www.hardwarecanucks.com/foru...616-nvidia-geforce-gtx-680-2gb-review-22.html
http://www.hardwarecanucks.com/foru...616-nvidia-geforce-gtx-680-2gb-review-23.html
So I'm right. For this resolution and the more demanding games you would need about twice the power if you don't want to make compromises like turning on crap like FXAA or MLAA or leaving AA off altogether.
And regarding AA you are wrong as well. At todays pixel densities, a higher resolution does nothing in terms of antialiasing compared to a smaller screen but with the same pixel density. You have more pixels, but the size of the monitor is also increased, thus jaggies are larger. Also, our eye tends to highlight light/dark contrasts. As long as we have discrete rectangular pixels and no averaging (like AA), aliasing will always be a problem.
Now if you scale a high res like 2160p down to 1080p on an 1080p display (24" roughly) you get less aliasing. But this is due to the averaging filter (Lanczos for example) that you can do because you have more pixels, thus more information. However, on a larger screen with more pixels, all those (equally larger) pixels are displayed as they are, no averaging takes place.
An example here.
1080p, a section of the displayed image:
2160p@1080p, same section (the size doesn't change! downscaled with Lanczos ):
I don't need to own such a monitor to understand the basics.
Even with insanely high resolution you cannot defeat certain kind of artifacts like Moire-effects.