I think the question to ask is: Look at these companies, did their CEO do: (a) better than expected this year, (b) as expected this year or (c) worse than expected this year. What seems to consistently come out of these articles is that CEOs who fit (a) get paid a lot more YoY, CEOs who fit (b) get paid a lot more YoY, and CEOs who fit (c) get paid a lot more YoY.
And of course, some of it is richly ironic, one of the companies listed is equilar - a company whose raison d'etre is suppressing employee pay, they're a legal version of a cartel.
They probably know somewhat more than a recent MBA grad, but they aren't special geniuses, they made the right political decisions and have good connections. That meme, "your network is your networth," is very true.