Lets take stock.
EVERY Boston team is good right now. Red Sox win the World Series, Patriots and Celtics are expected to be in the final four at least. It would be an upset if they weren't in their respective conference championship. Bruins had the 2nd best record in the conference last year, lost in the round of 8 to the team with a better record. It wouldn't be a shock to see them in the final four this spring.
Meanwhile....
EVERY New York team ranges from atrocious to mediocre except for the Yankees, who just got to watch their chief rival do what they couldn't do last year and finish the job. And they have two teams per league, and they all suck.
It's a glorious time.