AAPL to Apple? Or APPL to orange?

I never really liked these kind of comparisons: (http://www.marketanthropology.com/2012/12/the-universal-law-of-gravatation.html). He could be right, but I don't think he's showing any data that is statistically significant. It's an analogy, alright, but not something I'd necessarily want to trade directly off of.