From: San Antonio, TX
Probably two different things here:
- US designers design for a US market, so non-US wars are less well covered
- English language forums and websites tend to cover English language games
While that's probably true in general, I don't think the OPs commentary is accurate even to this forum. Lost of Aussies, EnZeds, Brits*, French, Koreans, Swedish, Limeys*, Germans, Austrians, Finns, Canadians, folks from the UK* and so on and so on.
*Yeah, I know. I mentioned them three times. I like Brits.