We're certain that we can expect a similar sales boom after the release of Metal Gear Solid 4 as well. In comparison, Chart-Track noted that "Xbox 360 sales were down by 11 per cent." The effects of Microsoft's price drop were strong, but looks like the power of GT overshadowed the efforts of Microsoft's bargain pricing.
For those in love with sales and numbers, this generation of consoles is proving rather interesting. It'll be fascinating to see the effect GT has on the American market, when it launches in a few weeks time.