Yeah, I hear where you're coming from. Right now the system is designed to automatically mark games as released once they start appearing on Xbox Live. This works for 90% of games because most games are released in North America first. Sometimes you get games like Ninja Blade though which are released in Japan, or elsewhere, and it throws everything off.
At least for now I think we're going to have to maintain our current system, going by an international release date (as soon as it is released in any region), because we do have players who despite living in North America are able to play these Asian releases.
In the future we might be able to create a different system, but as I was brainstorming right now, no immediate solution came to me that ensures all games are accounted for as well as our current system does.