You think it will have over at least a %30 attach ratio in just the first week? Granted, more Wii U hardware will be sold in Japan that week, but that's still pretty steep I think. Just for perspective, Sunshine did about 320k in Japan first week I believe and that was on a bigger install base.
I'd say more along the lines of 250k for this one, especially since it seems a little more casual targeted and less likely to be something that's preordered as much.
Considering Japanese gamersprefer casual Mario games over hard mario games(see 3D Land's reception for proof) 3D world could do 250-300K, sure 350K is still outragous but it might still be possible if it taps into the casual market
bet with ash3336 he wins if Super Mario 3D World sells less than Mario Sunshine during the first three years, I win if 3D World outsells Sunshine's first 3 years. Loser get sig controlled for 3 months (punishment might change)
Do you doubt the WiiU? Do you believe that it won't match the GC?
Then come and accept this bet
Nintendo eShop USA sales ranking 2/12/2013 : http://gamrconnect.vgchartz.com/thread.php?id=173615