I think the interesting part about the Accord and the Camery vs. the BMW is that by many objective standards (certainly by long-term reliability) the cheaper cars are actually /better/ than the more expensive cars.
would I rather drive a brand new BMW or a brand new toyota? while they are new, sure, I'll take the BMW. But speaking as someone who has owned an out of warranty BMW, well, after the warranty period is over, the Toyota is a better car.
the poor showing of apple and lenovo may be partly due to the higher retained value of their products. I expect IBM/lenovo or a apple macbook are probably the only laptops worth fixing once they are out of warranty. cheap laptops, once they are out of warranty, often have an ebay value less than what you'd pay to get it repaired.
From my reading of the article, it seems like they tracked the number of laptops which failed and needed repairs, not the number which failed and were repaired. So no, higher retained value doesn't explain it.
Even if they were looking at how many were repaired (where lower retained value could tilt repair percentage downward, by making people disinclined to repair them, as you suggest) this would merely make other brands of laptops less reliable (with lower numbers caused by fewer damaged laptops being repaired); correcting for it wouldn't improve Mac/IBM/Lenovo's numbers, though it could damage the others, making them seem better by comparison.
would I rather drive a brand new BMW or a brand new toyota? while they are new, sure, I'll take the BMW. But speaking as someone who has owned an out of warranty BMW, well, after the warranty period is over, the Toyota is a better car.