OK, time for the response
1) And? Just as some Kinect sales would have included an XBox, so too would have some iPad sales. The fact remains though it's still a discussion of a £100 extension to a system that was already in place in the majority of cases, vs a product that had no competition and is in a different market entirely.
Kinect, while a new product, is still competing with the existing market forces of the Wii with its handheld controllers, and unlike the iPad, it's reliant on a specific device; an iPad is not reliant on a particular type of device (and in fact, it's not even explicitly reliant; I only plug it into my PC to back it up occasionally, most of the time I'm just browsing happily with it) and was a product without any competing market at the time.
2) Yes, the fanbois will be queueing around the block to buy it come release day. But the fanbois are not the majority of users, and I can bet had the iPad been sold at the same time, it would have done better than it did - the push to buy electronics at Christmas is always a big one, especially things that can lead to party games (which is likely one reason it was bought in a number of cases!)
It's not about the fact it was 'practically a Bank Holiday' come Apple release day, it's the timing - the run up to Christmas is when people spend far more money than they would during the rest of the year, generally.
3) Wouldn't really agree that they're competing on the same basis. XBox + Kinect is primarily a gaming platform, that happens to support movies and music. iPad is not primarily a gaming platform, it's a content consumption platform that happens to support some games. Hardly an apples vs apples comparison, really, so it's not competing for the same $$$.
How exactly can a Kinect and an iPad be 'overlapping in function' exactly?