Bioshock DX 9 vs. DX 10 trailer: Can you see the difference?

Ok so we know that Bioshock is an awesome game but what we would like to know is toggling between DX9 and DX10 really much different from each other? Same as myself it is said over at Gametrailers that the graphics settings menu does not work properly and that is why I could not see much difference either in the water ripples.

This is all about Bioshock DX 9 vs. DX 10 trailer: Can you see the difference? and on a personal level I do not think that Bioshock needs DX 10 hardware really but hey many people like a versus this versus that scenario do they not. To me the video shown below is not done at a great resolution so you can not see the difference really unless you try it yourself. Just play the game and forget all this, but hey watch the video trailer below.

Bioshock DX 9 vs. DX 10: Can you see the difference? And what are your views?