Well the '14 soccer game demos are out now and I'll probably only be buying one this year. So these demos are farily important to me. I've only downloaded the PES one so far and played about 3 matches.
The demo includes 6 or so national teams who I can't remember, Bayern Munich, Manchester United, Santos, Boca Juniors, and Colo Colo. Apparently PES has been built from the ground up this year and isn't just a few tweaks from the previous iteration.
Early impressions of PES:
The Good -
Player models are really good.
The sound (crowd reaction, oohs and aahs, that sort of thing)