Alright lets think about the MC difference then. In BB Max was a pathetic lonely boy at home. Except aunt, he had no friend etc. Day times anti-social boy was waiting family members arrival.
It was really depressing game. Max was a quickie wanker boy with funny wrist issue. x'D Only fun at home was Eric challenge.
In SLF game MC has many friends and flirts just because the school-settings. And there is bonus, Walkius doesn't scare to add male characters in this game. This game is more life from start of the game and the main reason is the school-setting.