The debate over if red wine had benefits for the heart or other areas of the body focuses around the current debate over the supposed health benefits of the natural phenol Resveratrol.
From the Linus Pauling Institute OSU:
Although resveratrol can inhibit the growth of cancer cells in culture and in some animal models, it is not known whether high intakes of resveratrol can prevent cancer in humans.
Moderate alcohol consumption has been consistently associated with 20-30% reductions in coronary heart disease risk, but it is not yet clear whether red wine polyphenols, such as resveratrol, confer any additional risk reduction.
Notice that they used the word associated in the above quote meaning that there could be any number of other factors that are not measured in scientific study that could influence this correlation (Eg. moderate alcohol consumption may lower stress and lower stress improves heart health?)
Socioeconomic and lifestyle differences between people who prefer wine and those who prefer beer or liquor may explain part of the additional benefit observed in some studies. Several studies have found that people who prefer wine tend to have higher incomes, more education, smoke less, and eat more fruits and vegetables and less saturated fat than people who prefer other alcoholic beverages
Considering the mass media hype surrounding the potential health benefits of red wine, and various press releases by pharmeceutical companies surrounding the supposed benefits, this study has never been published in a peer reviewed scientific journal, so claims made here cannot be taken seriously.
In all, there may be some truth to this, as high dosages of resveratrol had positive effects in lab mice, but so far nobody can really say for sure.