Yes, sucrose is di-saccharide, but is chemically bonded glucose and fructose. HFCS is a chemical product of a vat of some corn byproduct and enzymes to either convert glucose, or strip apart natural sucrose. But HFCS just means high fructose content and it is a liquid, so we're comparing dry sugar by weight (and it absorbs moisture) to liquid HFCS..

Wikipedia:

Common commercial grades of high fructose corn syrup include fructose contents of 42%, 55%, or 90%. The 55% grade is most commonly used in soft drinks and equivalent to caster sugar.

Unlike sucrose, HFCS consists of a mixture of glucose and fructose, which doesn't require an enzymatic step to break it down before absorption in the intestine.

So in this case sucrose is 50% fructose, HFCS is 55% fructose. Pretty close.

Correct me if I'm wrong. Sucrose is basically glucose and fructose. If in the video, the 39g of sucrose were equal to aprox. 8 teaspoons, then the amount of HFCS will be between 12 and 15 teaspoons in a 12 oz can?

well except that NO soda actually contains table sugar (sucrose).
They all have tons of high fructose corn syrup. (the exception is Coke put out during Passover)