Great & fun analogy! The major difference is that w/ sound systems, we are trying to REPRODUCE an actual live event that we sometimes get to experience so there is an actual point of reference which the equipment attempts to emulate. In fact, some manufacturers have over the years, demonstrated their stuff in direct comparison to actual live music being played in the room.
With wine, there is no set standard that winemakers try to reproduce. In fact, flavor profiles often change w/ each vintage.
Music enjoyment takes no training, it moves you & you like it or you don't. Trying to listen carefully & decide which sound systems and / or equipment comes closest to live music definitely takes some time & experience to grasp & consistently be able to discern.