I made no assertion about the taste of sugar vs. corn syrup. There are a number of products marketed as "Coke", and those products have different flavor profiles. Some use sucrose, some HFCS. It might be formulation, it might be packaging, freshness or bottling methodology. Maybe they don't tweak formulas for limited run products or in local markets like Mexico. I have no idea.

Even with the standard fountain formulation, there is a different/better flavor at McDonald's because of the standards they apply to each part of the supply chain. In a few weeks, depending on where you live, there will be two liter bottles of coke with a yellow cap. That's kosher for passover -- try it.

> sucrose disassociates in the presence of an acid into glucose+fructose simple sugars

Which tastes different from pure fructose. If you want to taste them side by side, you can absolutely tell the difference. (If you've done any endurance sports, you know what I mean.)

Once digested I agree that the health effects are suspect. But tastewise, fructose, sucrose and glucose are distinct.