Its constrained in that test by the limitations of the 9800. Compare it to the GTX 480 and you can see its performance increases due to different constraints:
http://www.hwcompare.com/8739/geforce-gtx-460-1gb-vs-geforce-gtx-480/
The games (aside from BFBC2 not being there) are showing the exact same FPS in those tests as the previous one. Even the Bottom tests are the exact same. Maybe I am missing something? Just woke up so it's very possible.

Wouldn't that resolution really be a hard hitter on the FPS? I don't know how powerful the 460 is, but I know normally anything above my 1680x1050 starts to hurt my FPS with a GTX 260.
Example:
480 v 460
Supreme Commander 2
Settings: High
AA: 8x
AF: 16x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
GeForce GTX 480 99 FPS
GeForce GTX 460 1GB 77 FPS9800 v 460
Supreme Commander 2
Settings: High
AA: 8x
AF: 16x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
GeForce GTX 460 1GB 77 FPSGeForce 9800 GT 512MB 28 FPS