it's not the same thing!
you can't compare these two things!
Yeah... the Retina isn't what you'd call a paragon of mining exactly... While true, it isn't a very interesting or telling comparison.
While both of your points are valid, they each represent the perspectives of a well educated bitcoiners, which probably comprise about 0.0001% of the general population. It think for the average Joe, this kind of comparison is a way to demonstrate the depth and power of the bitcoin system. Keep in mind, the average Joe had absolutely no concept of how deep and powerful the bitcoin network it.
