MS on the other hand has been playing it extremely close to the vest with regards to price cuts however. I think they need one for Europe much more than USA, but I dont think it's really feasible to cut only in one territory.
Why not, we´ve seen that before, the price of the PS3 was cut in the US before it was cut in Europe.
The 360 has been dirt cheap in Japan compared to other territories right from the start, these companies have no problem differentiating the price on different markets if that was your concern.
Concerning the losses Sony make on the 40 GB model. Here in Europe I am pretty sure Sony prefered selling the 40 GB model at €400 than the 60 GB at €500 (with US 80 GB-motherboard), because the 60 GB model sold like crazy because of BC even at much higher price points in November, Sony brought in a few extra batches of 60 GB units in November that sold out just like that, but then nothing more, they just kept the 40 GB model. games-industry.biz reported that HMV would have liked more of the 60 GB for "up-selling". I believe a new PS3 model with larger HDD and BC will appear when they can build it at less loss, that motherboard may very well appear in the US 80 model at the same time.
I think Sony kept the 80 GB model (with the attractive BC function) in US because it was more needed there because of competetive reasons i.e. it´s a tougher market for Sony, Europe is probably helping subsidizing those units.
A lot of people seem to believe that the PS3 40 GB cost about $100 more to make than the 360 premium. If someone could specify the cost differences for the significant components to support that, it would be really interesting.