The Japan numbers are Famitsu. Because there is no official Famitsu repository that provides LTDs, you are forced to use a third party site. I personally use Japan GameCharts, which sources its data originally from Famitsu.com and Game-Data no Heya. It is considered reliable. If you wanted to see week-by-week data, you could see it here (an excellent source, run by JoshuaJSlone. It shows that we only have data for the first two weeks of sales, and after that in off-chart sales there was enough to get an end-of-the-year update.
GBA data is harder to come by. Japan GameCharts (by choice) only lists games that have broken 200k, which neither of the AW installments for GBA did. It should be noted that AW is so unpopular in Japan that the two GBA installments were actually released in a double pack in 2004. I only have access to the Famitsu top 100 for 2004 (located here), which goes down to 130,000 sales and Advance Wars did not make it. If you have access to the Famitsu top 500, those normally go down to ~10,000 sales and it's virtually certain you'd be able to get a reliable number from there.
NPD figures cannot by site rules or NPD rules posted here. I understand that me saying "I've got the numbers, they're not hot, but I can't post them" isn't exactly re-assuring so I invite you to ignore my section on US sales. Unfortunately, the issues with NPD numbers make this sort of thing tricky.
In terms of online connections, my data comes from here. Every week on NeoGAF Bo130 posts all the Nintendo WFC data in a thread. You can view his methodology there, and rest assured his information is true.
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The Japan numbers are Famitsu. Because there is no official Famitsu repository that provides LTDs, you are forced to use a third party site. I personally use Japan GameCharts, which sources its data originally from Famitsu.com and Game-Data no Heya. It is considered reliable. If you wanted to see week-by-week data, you could see it here (an excellent source, run by JoshuaJSlone. It shows that we only have data for the first two weeks of sales, and after that in off-chart sales there was enough to get an end-of-the-year update.
GBA data is harder to come by. Japan GameCharts (by choice) only lists games that have broken 200k, which neither of the AW installments for GBA did. It should be noted that AW is so unpopular in Japan that the two GBA installments were actually released in a double pack in 2004. I only have access to the Famitsu top 100 for 2004 (located here), which goes down to 130,000 sales and Advance Wars did not make it. If you have access to the Famitsu top 500, those normally go down to ~10,000 sales and it's virtually certain you'd be able to get a reliable number from there.
NPD figures cannot by site rules or NPD rules posted here. I understand that me saying "I've got the numbers, they're not hot, but I can't post them" isn't exactly re-assuring so I invite you to ignore my section on US sales. Unfortunately, the issues with NPD numbers make this sort of thing tricky.
In terms of online connections, my data comes from here. Every week on NeoGAF Bo130 posts all the Nintendo WFC data in a thread. You can view his methodology there, and rest assured his information is true.
Please let me know if you need any other sources.