Even at this rate though the PS3 may not outsell the 360's WW sales by the end of this generation.
The PS3 would not only need a substantial increase in sales but the 360 a substantial drop. Also as Blu-Ray players get cheaper the PS3 becomes less and less appealing an option to consumers and even then PS3's sold as Blu-Ray players don't garantee people are buying them to play games. But before saying all that let's not forget Blu-Ray is still struggling to make its stake in the market even after HD-DVD's fall.
Even the PSP is selling very good now, but there's no arguing its not selling games and is virtually dead as a third party gaming console beyond that of Konami and Square-Enix whom both have substantial stock owned by Sony.