I don't have enough information to judge that, since I never made it to director level at my time at FB. One salient note is that at FB you can switch between

I don't have enough information to judge that, since I never made it to director level at my time at FB. One salient note is that at FB you can switch between parallel tracks whenever you like. Eg. Any director level engineer can switch to being a director level manager and vice versa.