I wonder where he got the data from. Mixing PAL data in, when possible, really isn't the best way to give an accurate portrayal.
I gathered the data for the top 100 games for the 360 and PS3 in 2009 (about 43 between both for this example) ranging from 2007 through 2009. In North America, there's a much more gradual trend in favor of the PS3 than what the article is arguing. The skewing has droped from about 1.9 in favor of the 360 to 1.78 in a year....Not a major move.
The issue with the article is that it should favor the PS3, as the % gap between the 360 and PS3 drop. Even though the 360 is maintaining a pretty good, 8 million unit lead, the % gap is steadily decreasing. And when we're talking about software sales - from a % standpoint, it will favor the PS3 over time.
Example: At the end of each year, there has been the following gap between the PS3 and 360:
- 2007: PS3: 3.5m, X360: 10.1m - 288% gap
- 2008: PS3: 7.4m, X360: 15.7m - 212% gap
- Current: PS3: 8.1m, X360: 16.8m - 207% gap
So as you can see, the % value gap has decreased between the 360 and the PS3, despite the fact that the units sold gap has increased by about 2.1 million units. This is the major flaw in the article: They are trying to pass off percentages as values.
In this way, the article fails hard. Even if every game had a 1,000,000 unit gap in favor of the 360, it's still trend negatively against the 360 if total units sold increased.