Here's why Alastor may now be weaker than his Overlord Peers, which includes: Carmilla Carmine, Zestial, Vox, Valentino, Velvette, Rosie, Zeezi, and some others. It's because during Hazbin Hotel Episode 8, the Alastor vs Adam fight causes his staff to get broken. This leads to some of his powers going away, causing his defeat. Now that his staff is broken he is vulnerable to his enemies such as Vox, the other Vees, and possibly the other overlords.