Lets just turn on the LHC

The question of whether or not authenticity is necessary always gets me to thinking about this situation Haltmeier would often bring up.  It's a scenario where synth sounds have come such a long way that they are indistinguishable from the real instruments and you take a student, who has no musical background and only studies the piano for a short period of time, and you have another student, who for a much much longer period of time and more effort given, learns an instrument, say a saxophone.  The piano student would be given a synth instrument that sounded exactly like the other student's saxophone.  So through less time and effort the piano student could "play" the saxophone equally well if not better than the student who can authentically play the instrument.  What should authenticity mean in this case?  Both are "musicians", both practiced their craft, but it feels like the student who worked harder got cheated because he didn't have to.  What value does working that hard have if the same thing can be done and kind of faked?  As an instrument player I'd be a little upset.  With my biased opinion I think authenticity is very important.  I'm curious to hear how authenticity could not be relevant.