360 sales are inflated due to redundant purchases from impatient gamers.

[Zlejedi]

It still counts as a sale.

Also this type of behaviour will be more common in 2009 as first x360 are running out of warranty. So people will have to replace them.

BUT this has impact on real user base and if we inlude the fact you can pirate games on x360 then real user base is lower than sales number show and quite possibly similar to ps3 numbers (on the other hand some ps3 are used for BR only)