Cool. Doesn't really matter to me, I don't play fighting games at all really on the PCE.
Are there any games besides fighters that make use of more than two buttons?
I had a thread at MagicEngine.com that compiled all the games that were 3-button and 6-button compatible. Besides the obvious fighting games:
3-button (instead of hitting "RUN" button): Forgotten Worlds, Bloody Wolf...
6-button: Ys IV (navigating menus) ...
Ahhh, damn it, I can't remember any others. There were a few more "surprises" in there...