Just wanted to let you all know that there is a very easy solution to this graphical flaw.

I have seen a bunch of graphic comparisons where the ps3 version had a kind of washed out look to it and felt flat graphic wise. I then proceeded to tweak my display settings and found out that full RGB and Super White made it look a lot better.

System Settings > Display Settings > Set RGB to full instead of limited and set Super White on.
Note: You might have to increase your brightness on your TV and in-game.

It won't work for everybody since it depends on your TV, but for me it adds much more depth to the graphics and the shadows seems much more palpable. I do know that some TVs don't support it and hence makes it too dark, missing out on some details. My TV don't but I still find it to be a huge improvment. Some areas are a bit dark but I like it that way. Try it and you be the judge.
I hope it helps!