This is a surprise to you?
Killington is one of the most well known and famous ski towns in the east. The mountain itself as far as steeps, snow, size, lifts, even location, is all better than Mt. Snow. You could argue location. Mt Snow also has no infrastructure as far as hotels, town, night lift. Killington has all of that and more. The only thing Mt Snow has for it is maybe terrain parks and grooming/beginner programs/trails.