There's no reason to assume their P/E should be the same. P/E is only one of a range of ways to compare company values, and there are lots of reasons (growth, r

There's no reason to assume their P/E should be the same. P/E is only one of a range of ways to compare company values, and there are lots of reasons (growth, risk, etc) why the P/Es of two different companies might differ. I don't agree with FB's valuation, but the argument has to be more complex than simply comparing P/Es.