Why PS3 can outsell XBOX 360 in overall sales

[PS3beats360]

Race is on for PS3 and 360 to get to 50 million console sales. This will determine second place in console wars.

I believe that PS3 stands a good chance of getting to 50 million sales before 360. 360 may only sell 50 million console units lifetime but PS3 should sell 70 million+ consoles ltd.