@ Squilliam
For example GTA IV sold more copies on the 360, but the attach ratio is better amongst PS3 owners.
Some games were released later on the PS3 due to these games being lead on the 360, due to the 360 headstart. For a new console owner this means nothing, also of the best sold multi-platform games some are better on the 360 but likewise some are better on the PS3, the differences aren't that big though. Overall they are mostly the same games.
The 360 may have games which scored higher on the 360, but this means little. For example Oblvion scored lower on the PS3 on average, but every reviewer agrees the PS3 version is superior.
Some 360 games are showing their age as new games tend to accomplish more (resulting in higher expectations), if the old games would be released unmodified today they would receive lower scores.














