PS3 has a higher attach rate than Xbox 360, says Sony

Sony's Peter Dille has claimed that PS3 has a higher attach rate than Xbox 360, Gamasutra reports.

"If you factor in Xbox 360’s longer time in the marketplace and larger install base, Xbox 360 should be selling twice as many software units as PS3 if attach rates were equal -- and that is just not what we are seeing at retail with many multiplatform titles," he said.

Here are the figures:

• Street Fighter IV: Only 44,000 units separate the two consoles, with Microsoft winning by a 1:1 ratio. Yet the Sony version sold 402,919 units giving it an attach rate of 5.5 percent compared to Microsoft's 446,435 units with a 3.1 percent attach rate.

• Tomb Raider: Underworld sold 136,245 units on PS3, with an attach rate of 1.9 percent. The Xbox 360 version sold 108,784 units, giving an attach rate of 0.7 percent.

• Prince of Persia: Microsoft outsold Sony by 36,000 units giving the title a attach rate of 2.1 percent for the console compared to 3.7 percent on PS3.

• GTA IV: Had a 26.9 percent attach rate on PS3 versus Xbox 360's 23 percent, but there was a staggering sales gap between the machines: 3,362,196 360 units were sold compared to 1,959,798 units for PS3.

Dille goes on to cite Metacritic numbers and more Xbox 360 comparisons, but we'll let you hit the link for those. Percentages and the phrase "attach rate" have been mentioned enough without us adding to it.