I believe the PS3 will end with the 2nd place position. I don't think the PS3 will lose any or much momentum going into 2010, with the list of exclusives and multi-plat game can only push the PS3 further(IMO)
some people said the PS3 slim would have no effect
some people laughed at that person who made that thread that the PS3 wouldn't fall under 200k
some denied the fact that the PS3 would reach 30mil by the end of the year(in another thread)
I'm not saying these are facts that the PS3 will pass 360, but it shows the PS3 broke some expectations and preditions(even Sony's) all we can do is wait and see.