PS3 will outsell 360, but 360 put up a good fight.
Also, something to point out, in an alligned launch comparision PS3 outsold 360 for the first 5 alligned years. However 360 outsold PS3 in the 6th year alligned, and unless PS3 can top 9.81 million units in 2013 (which I doubt with successor consoles likey to release/be announced this year, and WiiU growing), 360 should outsell PS3 in the alligned 7th year. Maybe even years 8-10 as well. So while PS3 started better, 360 ended better.
P.S. In an alligned launch comparision, 360 outsold the PS2 in it's 6th year, but the PS3 has never outsold the PS2. In the 6th year 360 sold 14.1 million units, and PS2 sold 13.66 million units. PS3 did 11.28 in the corresponding year, and that's also the closest PS3 sales have been to PS2 sales in a corresponding year.