Yes, the base textures are higher resolution on 360 (by quite a bit). That was my main point.
However, regardless of whether AF is in use on PS3, it is a very low level of AF.
Look, here is that PS3 shot...
Notice how poor the filtering is? That could be, at best, 2x AF. Perhaps even selective AF.
However, I maintain that a different texture can appear different at a distance depending on how it was drawn. The mipmaps generated vary depending on what the original texture is.
I can't find the same area for 360, but look at the PS3 textures here...
On 360, the brick wall and the ground are much higher resolution. The ground texture is very different here, however, in that is has very dark cracks throughout. The 360 textures in that same scene are much lighter in appearance. You can see how pixelated and blurred the textures are (even up close), however. The resolution is clearly quite low. On 360, those artifacts are not present (though the texture does blur at a distance due to use of trilinear filtering).
