Don't take too seriously the records you see on Gamest, they are real records, that's for sure, but there is no mention about the settings used to do them; I mean that if default settings are usually used in Japan, it doesn't happen always.(posted 8714 days ago)Sometimes the difficulty level is raised, but what suffers changes mostly is the time setting.
Gamest reports scores on Ninja Commando up to 12,000,000 obtained changing the time setting to 30 minutes instead of 3 and a half. On Metal Slug, maybe they changed the difficulty from 4 to 8 and maybe the time limit has been raised from 60 to 70 or even 90. It's impossible to understand if the Gamest record is valid or not without further info.
If I change some options in Art of Fighting 2 I can even score 3,000,000 with Takuma.
BBH: your Shock Troopers score is indeed awesome, I don't deny it and I'm not sure at all I can beat it. When I'll have done all the records on the games I know better, I'll dedicate myself to it seriously. You think there's no one else that knows ST better than you? I do think the same about Metal Slug.
[Translation courtesy of Vaz]