You guys DO realize that these 124 games are NOT all US releases, right? US will probably see about 20-25 of those.
Nintendo has hit a Jackpot in Japan using the DS for edutainment with the Training series. They are churning out titles for training like mad, just look at thos Japanese sales charts. They don't sell that much (20-30k per title), but they are so cheap to make that they are just churning them out. I'm sure that there is probably a similar cottage industry for the Wii.
As for the US, Nintendo tends to publish the larger and higher profile titles. Nowhere near the number of titles that are released in Japan







