What's his best strength feat and does he get his helmet/axe? Not sure if they are considered standard equipment.
I'd say she's got the speed/flight edge. I remember him being half giant or something and stronger than the typical Asgardian, but I'm not sure if that means he's up in the lower 100 class like she is. Fighting skill could go either way as they both have generic Amazon/Asgardian training and debating that would be entirely semantical. I see her swinging a huge majority if he doesn't have his magical axe.
If he gets his axe things could be interesting, as he could open dimensions and stuff. Cassie's bracers have withstood the Atom Axe, SBP, heat vision, etc. so she's got defensive measures. She's also got the wishing lasso, which banished an actual god (amped extensively by another superior god; Ares) to hell or some such. I know Executioner had some magical resistance but idk, I would assume most gods intrinsically do too.
I'm willing to withhold judgement until I know how strong he is and what he gets for equipment.