From the recent sales figures, i think the 360 is doing ok but is doing poor when you look at how cheap it actually is.
In the US it starts from $199
In the UK it starts from £99 (Tesco and Sainsbury's)
etc, etc.
If we compare it to the PS3 this week, it outsold it by 20k, which i think is pretty poor.
My point is, why is it selling so badly for it's price point?