User blog comment:TimeShade/It's OFFICIAL: Tom Welling reprises Smallville role!/@comment-26537965-20190919174921/@comment-28109177-20190919183024

Maybe there IS an Omiverse! Think about it, instead of just multiple Earths inhabiting the same space, there are multiple Multiverses with their own set of Earths. That would easily explain the whole different Superman thing.