It looks like you posted those screens after I made my post last night.
I'm currently at work, so I'm unable to access any of these game sites since they are blocked by our filters, so I'll have to take a look at the pics when I get home.
The PS3 image is clearly showing a problem with depth testing the lower resolution transparency against the opaque objects.
edit: thought I recall nV having an article on it. See under point-sampled depth:
http://http.developer.nvidia.com/GPUGems3/gpugems3_ch23.html