I guess the player models are the same but the pitch, stands, crowds, etc are from the last-gen version.
The fourth official looks like a current-gen model, the guy in the suit looks like a sad PES 6 player, looking at the players wanting to look as detailed as them.
That's one crazy hairstyle the guy in the suit has, the new afro with an octagon fringe look. Player models and official models look very decent though. The next gen grass is an odd omission on PC. Why do konami not make the PC version better looking or at least on par with next gen consoles, a really odd decision.