Well, there are obviously improvements in lighting etc, but not enough for me really.
Also, despite the improved lighting, there is still a camera-fixed "spot-light" following the ball when you observe it in replay. This was used on the PS2 versions, and it is still there (Basically it means that the illusion of one light source (the sun) is ruined since the light, no matter what angle you look at the ball from, is always at for example the upper left side of the ball).
It's the small stuff.
Also in those pictures there's no sweat or smaller details that would gice the faces alot more authenticity. Zooming in on the FIFA engine reveals a layer of sweat which looks great in lighting, and the textures in FIFA are extremely high resolution, skin and kits (you can zoom in to the point of the camera clipping through the texture and you still don't really see any pixelation, you can see the fabric texture etc).
Not to mention the overall details of PES are very bad when in wide cameras. It might just be KONAMI having very conservative LOD settings, and that could potentially be sorted with a LOD mixer. But it really lacks the overall look compared to the competitors, despite obviously looking better than it did on the PS2.