If you care to do some research on the topic you will see that there is strong evidence pointing to chronic consumption of fructose damaging the metabolism in such a way that people no longer experience satiety the way a healthy person does. Over time this contributes to overconsumption as well as increased fat deposition which is a vicious cycle.
actually, could you pass a study that shows that. On pubmed, I see a lot of studies between carbs and protein.
On the fructose vs glucose side, I see most studies pointing out the bad effects of a high carb diet (where carbs = starch/glucose/fructose/sucrose), but nothing that compares fructose with glucose per se.
In fact, I see there are a few studies that show fructose is better than glucose, but they are primarily funded by the ILSI [1]
