Is wine healthier to drink than other forms of alcohol?

It depends. All alcohol should be consumed in moderation. Some studies have demonstrated benefits from the antioxidants in red wines in particular. These benefits are entirely negated if people overindulge.
Possibly. Depends on how much wine. There is some evidence that resveratrol, a chemical found in red wines (and also red grape juice) may have cardiac protective effects. In men, up to 2 standard drinks per day (one shot of 80 proof liquor, 8 oz of beer, 5 oz wine) and in women 1 drink per day, is associated with some cardiac protection. Higher doses cause way more harm than good, and exercise is better.