If the WiiU did end up more successful than the Wii, I'd certainly be surprised.
Still waitin' on a guaranteed price for launch...
CVG reports that Nintendo is expecting to sell from 4 to 5 million Wii Us during the new console’s launch period according to a forecast that the company itself made in its Q1 financial report, where it said that it expects to sell 10.5 million Wiis and Wii Us combined in the present financial year, which ends in March 2013. As far as Wii U sales are concerned, IHS Screen Digest analyst Piers-Harding Rolls told CVG that he thinks Nintendo is perfectly capable of shipping 4 million Wii Us in the current financial year, “but it depends on launch price and timing,” he cautioned. He said that it all really depends on how much Wii sales are cannibalized by Wii U sales, adding that IHS Screen Digest thinks that Nintendo will ship around 6.5 million Wiis, and approximately 4 million Wii Us. He goes on to say that he doesn’t think the Wii U will be as successful as the Wii, due to increased competition in the marketplace, and the fact that the second-screen controller is “a more complex consumer proposition compared to the Wii and is much harder to market.” CVG has also heard whispers that the Wii U’s release date might have slipped from November to early December.