There is a difference, but better is not subjective, in any measure a car can be measured by your 993 is a better car. Having air cooled Porsche as a toy is nice for that visceral difference, but if a person who drives a lot had to pick a single car to drive for the rest of his life, and the only choices were air cooled Porsche or 993 as an example most would pick 993.
To keep on topic it is similar to these knives that are so expensive now, these knives are not better than they used to be they are also not the be all and end all of knives. There is a certain difference in using them, but you don't see people sell all their knives and just keep one shig as soon as they get one. All this doesn't matter though, as long as there are people willing to pay the high prices there will be people willing to sell.