I realize that this is a Mac "cult" article and post, but would it really hurt their delusional tendencies that much to mention who are #s 1 through 3?
How about the obvious relevant and related statistic as to what fraction of the total the laptop market represents?
Actually, it isn't. The article's authors do statistical analysis by company. Numbers 1 through 3 will have similar articles focusing on their placement in the market. This article is like an abstract... a hint of what's in the full article. The information you want is probably included in the main article which the sell for an exorbitant load of money.