S2S is better than Express East. I know they lost today by 1 but they have better players and will win that matchup most times.
Looking at results last 3 weeks would say Express East, Igloo and S2S all right in same tier 2.
Penguin
Express East 3 Igloo 4
Express East 1 Rebels 7
Igloo 3 Rebels 6 - Champ Game
Spring Jam
Express East 0 Rebels 4
Express East 2 Igloo 7
Igloo 6 Shore 2 Shore 6
Rebels 7 Igloo 2 - Champ Game
Spring Challenge
Express East 1 Rebels 7
Express East 7 Shore 2 Shore 6
Rebels 5 Shore 2 Shore 2
So in all matchups between these 4 teams
Rebels 36 GF 9 GA
Express East 14 GF 39 GA
Igloo 22 GF 24 GA
Shore 14 GF 19Ga
Rebels 1
Igloo 2
Shore 3
East 4