Currently it looks like the PS3 will pass the 360 by the end of this year. Of course that's assuming sales from January onwards remain similar to sales in November, and that the 360 doesn't get a price cut any time soon.
Remember, the PS3 only started selling significantly more after its second major price cut. Before that there were a few months of the 360 selling far better, before which there were several months of nearly identical sales. A 50 euro price cut would probably put the consoles on an even footing for a while, and a 100 one would definitely give the 360 enough boost to have a larger install base in Europe by the end of the year, but it remains to be seen if MS wants us that badly.