You gfx card is a worser rebrand of the GTX770, so dont have high hopes on playing this on Ultra/high.
You'll get it on Medium.
Also i bet, like you said, they do infact lower the system requirements, to sell more units.
I'm asking in every video released by CA/SEGA, to post their PC config. i'll bet its a GTX980TI in SLI for the battles they show us. With the latest intel I7 processor.
My prediction?
Specs for medium, will in fact give you low details (60fps)
Specs for High, will give you medium details (60fps)
Specs for ultra, will give you High/ultra details (60fps).
Remember the ROME2 lie. Recording all games on half the speed during recording, than put it on youtube on double the speed. So it looks smooth.
I'll wait on upgrading my GTX 770, for the release of the new Nvidia/AMD cards.
If i would like to pay for one, now, it will be the R9 390 (8gb + Direct X12). Cause that cards is better than the Nvidia GTX 970 (3.5gb + 0.5gb no direct X 12).