I don't know if there is a right or wrong answer here. I do agree that getting in the mental mode of whatever genre you have to play (sound/style/etc) is extremely important. To that end, you "can" fool most of the people, most of the time...if you are competent enough to do so. (not the horn..the player concept).
Still, I would submit that subtle differences would be noticed if you listened to a specialized person/equipment set up on a particular genre (classical/pop/latin/jazz/what have you)...vs someone using "middle of the road" stuff playing the same. This would also be true of whether you are considering what's "good enough" for run of the mill/local type work vs a real professional setting. Would "okay" be good enough?
Can you make do/do well on all around equipment with perhaps a mpc change? yep. Is it optimum? hmmmm?
For what it's worth from a life long musical chameleon...
