They can say whatever they want with their fancy degrees in chemistry. I've always suspected that the real advantage of red wine is twofold:

1) Unlike other hard beverages, people tend to not abuse it, thus liver problems don't come up.

2) Like all hard beverages, it has the effect of mellowing you out. I probably spend at least 3-4 hours a day considerably less high-strung as a result of wine drinking. Stress is a killer. This kind of everyday moderate drinking has been the status quo throughout the Mediterranean for 1000s of years.