Industrial sugar contains no fiber vs. the fiber in many fruits complementing the fructose and ameliorating potentially harmful effects meanwhile slowing digestion [1]. My guess is this leads to a more sustained energy boost and relatively mild to nonexistent crash depending on how well your body reacts to carbohydrates.
One may need to be somewhat more moderate with dates as they contain little fiber to sugar content - hinting at the importance of varying your fruit diet.
So based on that it looks like nothing to do with sucrose vs HFSC, only that the berries have some other properties like binding the sugar up in fiber that slow down metabolism.
It would seem if you bound HFSC up with fiber it would have the same effect.
