I have both and would have to disagree. Sure the PS3 has some awesome exclusives but as does the Xbox. PS3 has awesome media center functionality while the Xbox has a way better live system. Xbox controller is better than PS3.
Any reasonable person would say they are both equal since most people but this dead horse debate to bed years ago.
It's subjective. I find the PS3 controller to be much better than the Xbox one, but that could just be due to me using dual shock since the PSOne. The Xbox has much better trigger buttons, I give it that much, but I find the Dual Shock shape and layout to suite me better.
So there's rumours going around that the PS3 might see a price cut after E3 this year due to Sony's huge financial losses as the company as a whole and also with increased competition from the successor to the Wii.
There shouldn't be an argument any longer on which is better, they both rock, though my Xbox still gets a little more love.
Live Long and Prosper