Anecdotal, but the best machine will never be able to do something as good as the best human in most circumstances. That is because, unlike machines, humans have passions and character that subtly imbues itself in the end result. This, of course, isn't limited to coffee, but to anything a machine could do that isn't strictly tied to exercises in logic (for example, computers will always be better than humans at most games because they can be analysed logically and acted upon)