I would echo what Mars A Day said."they are just better at doing the same stuff as everyone else "IMHO, their implementation is particularly strong, the working environment is tough in comparison to JS, at least the JS of 4 years ago. Often they aren't the first with innovation but they make new innovation work at their scale and hammer the implementation. If you look at board members like Sir Terry, Richard Brasher and Tim Mason they are all from a marketing background, hence they get customer data.