I really dont see much of a difference between Ultra High and High in DX9
Completely agree. No difference.
Also DX10 and DX9 looks almost identical. I guess you could see some difference in gameplay itself, though i'm sure minimal.
This brings me to a point I wanted to make to PCGH staff; Can you guys run FRAPS (or other software that can capture FPS count) and just post the screenshots with the FPS counter?
This way we can see, not only the performance output for the game in your test configurations, but also if the improvement in graphics (if any) is worth it the lower frame count.
This would make these 'Comparison Features' even better