The last thing I remember was that there had been something like 10 million downloads of Virtual Console games by February 2008.
Well, the current state of affairs is that the Virtual Console saw over 10 million downloads by the end of last December.
Nothing about that quote, or Hudson's general pessimism about moving games on WiiWare, should encourage a reading of that quote which suggests that the fraction of copies the WiiWare game has sold versus the XBLA game exactly aligns with the difference in time, meaning that if the XBLA game ceased selling and the WiiWare game continued selling at the exact same pace it would catch up in a year's time (to use one of Josh's favorite devices). You can probably stretch the most literal meaning of those words to come out to something like that, but that would be the most tendentious reading one could possibly imagine. So... it doesn't really shock me that this is the reading you're going with.
But Hudson is one of the biggest publishers on the platform... I don't think there are many successful WiiWare publishers in general.
Mike Edery, the former manager of the XBLA platform, commented on that: