All things being equal - which, of course, they aren't - the cold still favors New York. The Hudson freezes as far south as Manhattan on occasion (and historically did every year) but the New York harbor never does - while the Gulf of St Lawrence does pretty much every year, and certainly the river freezes as far as Quebec City consistently. Plus, the Hudson freeze is for much less time.
...Though it is worth noting that the Erie Canal itself is normally frozen from about late November/early December through March or April. But still, it's hard for me to see the St Lawrence eclipse the Hudspn, especially with Niagara Falls.
...Though it is worth noting that the Erie Canal itself is normally frozen from about late November/early December through March or April. But still, it's hard for me to see the St Lawrence eclipse the Hudspn, especially with Niagara Falls.