No. It was not. The thread for the European version of SC3 was started as a way to contain the crazy ravings of one poster: an American who has convinced himself that SC3E is seriously the best version of Soul Calibur ever made. He was popping into all kinds of SC3 and SC4 threads all over the board, and it had to stop, so I collected a dozen links to posts where he'd given his crazy impressions, and gave tongue in cheek summaries of each point.
You, on the other hand, are just assuming that SC2 has regional differences, and you're basing this on nothing. Do you assume that all games are modified before they get released in Europe? Generally speaking, you'd be right, but the differences are so mundane that nobody should be interested in catalogueing them. Things like menu languages and NTSC vs PAL video format.