Jane Thor is physically weaker than Gladiator. Diana tears her apart.
Probably on him holding her up in the air with one hand while she couldn't break his grip with both of hers.
He grabbed her unexpectedly, while she was confused and held her there for a panel before they were teleported back to the Sh'iar Gods:
That isn't conclusive evidence of any kind of superiority. It may imply an advantage but their individual encounters with the Sh'iar Gods would actually indicate a significant advantage for Jane if not in strength then definitely in overall durability and even more so in power. I hope they have a brief scuffle because if anyone has been keeping up with Aaron's work on Thor, the idea that Thor, even Jane, is not as strong as Gladiator would be a real surprise.
Also, one hit from Mjolnir and Gladiator would be floored again.