A rough translation:
Norwegian game- and multimedia association reports that Multiplatform titles sells far better on the PS3 compared to the X360.
Games like FIFA 08 and Need For Speed ProStreet sells far stronger on PS3 than 360. Magazine "Faro Journalen" have done a quick calculation, which shows that fresh multiplatform titles released in Fall have in almost all accounts sold better on the PS3. Only Guitar Hero 3 sales have been better on X360.
According to store (I assume all types of stores) employees "Faro Journalen" have contacted, PS3 owners are more hungry at new titles, and franchises like Need For Speed and FIFA have traditionally been associated with Playstation-platforms in a larger degree.
Regardless, it is impressive that just after 8 months in Norwegian stores the PS3 could do this well. (having troubles finding the right word here, but it goes a little like that)
These numbers obviously say nothing about the exclusive titles on each platform. Both X360 and PS3 have had a good share of exclusive titles in Fall like Halo 3, Mass Effect and PGR4 for X360 and Ratchet & Clank, Uncharted and Singstar for PS3.
It will be exciting to see what the future holds.
NOTE: The translation is not a word-to-word translation. While I tried to keep it that way (to not twist it), it was hard in some cases. Also everything in parenteses is me talking.