Pedrosa's strategy made sense to me. He was 74pts behind Marquez so he needed to take a big chance, and hope Marquez crashed. Marquez' strategy (lackthereof) was confusing. He's on the same bike as Dani so he doesn't have to worry about superior equipment from his closest competitor. Rossi was out so Marquez' only need to collect solid points to clinch for Honda and for himself.
The big loser was Rossi, though. If he had kept it together, the championship could have been close. Let's suppose that Rossi found a way to win, he'd be on 239 and Marquez on 291. HRC would be quite uncomfortable.