I don't go by these, and I am a fan of both systems.
Reasoning....Right now, 360 is 12 months ahead of PS3, in a year, the PS3 will be at the year mark, and the 360 will be at the 2 year mark.
The onyl real way to tell which is better would be to compare a 360 game NOW, with a PS3 game in a YEAR.
Or if they were launched at the same time.