I'm surprised as I would have thought the Mac would have sold more in 28 years, but it makes sense.

As the article says, the iOS devices are cheaper than Macs to begin with, but you also have the fact that the iOS devices most likely get replaced more frequently too.

Anyone that bought a Mac in 2009 will probably still have it for another couple of years, but anyone that bought an iPhone in 2009 probably got a new one in 2011 and therefore added to these figures.

Then, I suppose there is the added likelyhood that folk who own an iPhone are more likely to buy an iPad or iPod than Mac owners are to buy a second Mac, until that Mac needs replacing.