It is not. The Ivy mobile i3 will have HD 4000 graphics, just like the Sandy mobile i3 had HD 3000 graphics. The difference will be their Turbo frequencies, which should mean a small ~5% difference (in some cases perhaps 10%).
The 3720QM tested from anandtech clocks at 1250 Mhz. The cheaper 35W Dualcore models clocks as follows
i7-3520M - 1350 Mhz
i7-3520M - 1250 Mhz
i5-3360M - 1200 Mhz
i5-3320M - 1200 Mhz
i5-3210M - 1100 Mhz
It depends on the model.
What's with the Skyrim "medium preset" difference between Techreport and Anandtech?
At Techreport the i7-3720QM HD4000 gets 24 Avg FPS at Anandtech it gets 42.7 (of what I assume is Avg FPS, they don't actually say)
Newer driver? HD4000 friendly benchmark run (Techreport runs around Whiterun one of the more GPU intense areas of the game)?
http://techreport.com/articles.x/22932/10
http://www.anandtech.com/show/5831/amd-trinity-review-a10-4600m-a-new-hope/6
Techreport tested with 4xAA, maybe that's why.