Not sure where I should post this so picking here...

I'm going up to Boston from NYC on Sunday morning, it is supposed to be snowing in New York then; not going to be too much (they are saying no more than 2-3 inches) but the snow is supposedly traveling the same route to Boston at the same time I'll be traveling. In normal weather, I would be getting into Boston about 1PM, I have to be there no later than 4PM. Right now I have a bus ticket going up, but I'm wondering if I might be better off taking Amtrak although I'm loath to spend the extra money. Haven't really done more than commuting travel (and locally at ski resorts) in snow - anybody out there with experience traveling the NE Corridor in this weather have any advice one way or the other - would Amtrak be better?