Suffolk A is not a two horse race. The top 6 can each beat any of the other top teams and have done so this season.
No disrespect to the bottom 6 in the playoffs but here is how the top 6 have done against each other.

West Islip 3-1 (Smithtown West today)
Smithtown East 3-2
Connetquot 2-2 (HHHE today)
Ward Melville 2-3
Smithtown West 2-2 (West Islip today)
Half Hollow Hills East 1-3 (Connetquot today)