Is still a not-cannon story. In another story Batman states that Hyde is powerful enough to push Superman into space and Venom has beaten him up so I wouldn't count that much on those kind of story. That said I agree that Superman has the edge on strenght and durability and Thor has the advantage in magic.
That said it depends on the writer how much Supes can be affected by magic. Sometime a mere spell can take him down easely, other times he can fight powerful beings which use magic and stand his ground or even win.