I wonder if none of these videos are from the PC version. Because it's there to play and the PC producer wrote that he didn't think people realised it was the PC version because you can't see the cases.
I wish these super speedy videos that hasn't the Pro Passing marker is actually the PC version. Probably not, but one can dream.
I think to tell the difference between the PC and PS3 versions at Gamescom is the stadium being used. The PS3 version uses the FIFA Interactive World Cup stadium (the one with shadows covering most of the pitch) which was used in the FIFA10 demo as well. The PC version uses a different stadium.
I believe in this video, footage is combined between the PC and PS3 versions:
http://www.jeuxvideo.com/reportages-videos-jeux/0003/00035450/fifa-11-playstation-3-ps3-gc-2010-jonglages-en-compagnie-de-fifa-11-00000591-hd.htm#containerlienVoirDirectementlaVideo
Plus you can see Xbox controllers used when it is played at the other stadium with no shadows (01:12)