All boards are PCBs. Only JAMMA boards are JAMMA compliant (obviously). Only JAMMA compliant boards, or JAMMA converted boards, will run with a Super Gun. Some JAMMA+ games work as well, the plus being things like extra buttons, such as Street Fighter 2 (the JAMMA standard calls for no more than 3 I think). If the plus stands for something else, like a different type of video or something (not even sure that happens or is possible) then it could fuck up your super gun and/or TV.
Fuck GW Trading. The guy who runs it, Fsal, is an arrogant ass. He also loves sending virus infected emails to the people in his address book.