Where are you getting the idea that fructose is the sugar people consider harmful? That's definitely not mentioned in your supporting link - yes, HFCS and sucrose are the exact same to within a rounding error - except that HFCS is pre-digested corn starch, while sucrose requires enzymatic decomposition before it can be utilized by your body - a rate-limiting step after consumption.

Fructose just the principal sugar in fruit, and is used by diabetics as a sweetener. It has to be enzymatically decomposed in the liver, and doesn't yield a large insulin spike. The only particular risk is of non-alocoholic fatty liver disease if you consume way too much of it.

The point I was making in my reply was exactly what you said - there's no real difference between sucrose and HFCS, while the parent was implying there was. So at least on that we agree.