You can't really prove a point by cherrypicking a bunch of examples, although I suppose you can try. If you remember grade school math, you should know that calculating a mean or average is usually the best measure of central tendency, UNLESS there are exceptional outliers. The main reason the PS3 and 360 averages have fallen lately is that summer time is usually the time of crappy licensed games. See: Terminator Salvation, Leisure Suit Larry, Wheelman, Watchmen, etc.
The Wii has these types of games in bulk too, but unfortunately, the developers who made mediocre videogame versions of mediocre movies decided to make them HD exclusive. Hopefully they'll learn when they have quarterly losses of millions again. If they're going to make crappy games, they should at least put them on all platforms.
As I see it, the complete rather than recent ratings are still far more telling.
