Wow! Now I noticed..... almost 50k for Dragon Quest on WiiU in December ! That´s about 40 % of its total sales.
If WiiU games are getting that sort of % on digital sales, then it would seem that WiiU games are actually selling better than the retail charts suggests
It was a very good result for Dragon Quest, no doubt, but I'd suggest it's more an anomaly than a rule for WiiU games. The title was an expansion and I think there were incentives to upgrade digitally, making the ratio a lot more skewed than for most games.
And to answer your question from the other thread: We don't actually know how Famitsu are getting their numbers. But since they're the only digital sales we're getting, it's better than nothing!