I don't agree that there is a standard. If a work of art becomes successful it means that 'enough' people had a strong enough reaction to it that it became famous. The reasons they react favorably could be political, cultural, sheer beauty, emotional, etc etc etc. That still doesn't mean that everybody agrees.
Only that a large proportion agrees they appreciate the work. Kind of like democracy.
In the same breath, we must mention that less successful art is simply liked by fewer people.
This brings us back to the single piece of art we observe, whichever piece it happens to be. Unless you are investing in art, or looking for bragging rights, the only thing that's important in appreciating a work of art is how you react to it, what you feel, how it aesthetically pleases you - to your standard.
How a universal type of standard can come out of individual appreciation I do not understand. You will have to be very specific.
Again, please don't take this as criticism. I'm only trying to argue my opinion based on my experience with the world, as respectfully as I can.