As per Lax Power, they are the top 4 teams in all of CT from last season. So in addition to being better than all of Westchester, they are also better than all of CT.

Also, between the 4 of them, they collectively only lost to each other, plus Brunswick (a prep school), St Anthonys (LI), Ward Melville, Smithtown East, Chaminade and Bronxville. So quite literally, outside of lacrosse heavyweights, those schools are beating everyone.