He's sad to say this but he hopes that their team loses against the other teams before they are faced off against Irene... It's not like Sirzechs is hoping for his beloved little sister team to loses but he has a bad premonition that if Rias's team were to face off against Irene's then it won't be anything good because it seems like Irene and co have something against Rias and co and he doesn't know why...