User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-32252462-20180520171137/@comment-28884330-20180520183514

Because every single member of Sirzechs' peerage in an immensely powerful battler, with him standing above all of them and also vastly above Michael or anything in his group. That aside, Sirzechs' peerage has centuries of experience and bonding as a team, while Michael and his group have barely one year. The teamwork of Sirzechs' peerage is bound to be much more successful and powerful, and with the members being at least comparable and even superior in the case of Sirzechs' group, their superior teamwork would give them the win.