3 million PS3's to be sold in Others alone in December 2008 is impossible. 2 million would be more than likely a maximum in Others in December 2008. Last December 2007 1.2 million PS3's sold in Others region. Year on year sales of PS3's will be around 50% on top of last years sales.
For 3 million PS3's in December to be reached the sales will have to be 150% on top of last year's sales. Additional 1.8 million PS3's sold on last year's sales in Others for December.
PS3 will outsell the X360 by the end of the generation by over a 20 million consoles when the numbers are in. But this generation is a lot closer between MS and Sony in comparison to last generation. PS2 had a market share of 75%. PS3 market share would be around 30%. So a fall in market share of 45%. Competition in the market is good with Nintendo leading and MS being a lot competitive than last generation.