Likely PPS as they bought a huge amount of stuff at the G.C. auction and the Capcom rights may well have been part of the sale - who knows?
They bought a huge amount of parts, but I'm not sure they own the rights ? I might do some digging as I know someone who will know for sure.
I think I have been in contact with the same person...very muddy waters. it may very well be right that Gene Cunningham owned just parts as you said. The rights themselves might even have remained with the now de-registered US company that held the Capcom pinball business. Even if that were so, then the copyright for artwork could be somewhere else...complicated stuff.