The Wii U numbers are not great but they aren't bad either ...
In one week the Wii U has sold (roughly) 50% of what the PS-Vita sold in 9 months and it is likely that Nintendo could have sold more units had they shipped more.
I'm a little disappointed but that is mostly self-inflicted ... Compared to my initial estimate of 475,000 based on 500,000 shipped these numbers are reasonable but I got far too optimistic based on a second shipment last week.
Now, with 6 weeks left in the year Nintendo has to average 27,214 per week to sell better than the XBox 360 in 2005, 44,673 per week to have sold better than the PS3 in 2006, or 112,555 per week to sell better than the Wii in 2006. All seem possible assuming Nintendo can ship enough hardware.