From the article:
"Through March 2010, Microsoft has shipped 40.2m X360s worldwide. While that is a strong figure, the X360 does appear to be in a slow decline. If we normalize Microsoft's July to June fiscal year to April to March, hardware shipments for the X360, PS3, and Wii, and align the launches the X360 figures don't look that great for Microsoft. Red figures are the projected figures for Wii and PS3 from Nintendo and Sony in the March 2010 fiscal year, as official shipment data for those systems has yet to be released. X360 has 'more years' since it released in November 2005, while Wii and PS3 launched in November 2006."