PS3 MUST be seen as a standalone Blu-Ray device
To remove the PS3 from any next generation DVD sales list because it is multi-functional, is blatantly stupid. Being a PS3 owner myself, I have bought 4 Blu-Ray movies in the last 6 months. When I enter a shop to buy new titles, I'll stop at the Blu-Ray shelve first. If the price is too high, I'll get the normal DVD, else take the Blu-Ray format. I'm sure at least 75% of other PS3 owners did the same. The Blu-Ray movie sales will increase with prices coming down and more titles being converted to this format.
Last point, I'm surely not going to buy a secondary device if I already have a device capable of doing the same functions, thus your stats are incorrect!
Regards