I tasted some sparkling wines that to me were way better than Dom Perignon. And Pino Noir (forgot particular brand) I get for 20 Canadian pesos again tasted to me way better that some wine I bought for $120 to check why the fuck does it cost so much.

So yes I am pretty sure that some wine is objectively better than sulfuric acid but the rest is just a matter of individual taste. It does not matter that the tester can distinguish between 2 buttles of the same wine and tell the year it's been produced.