not really a miss-match (if you know what you're talking about that is 😄 )
Wonder Man actually has destroyed a grade A adamantium Ultron before by smashing him around the place so much that his internal components broke and shut him down.... Thor could easily put enough energy through him to short out every circuit in his body or just teleport him to the sun... or he could just do what Wonder Man did
💃
Thor would get creamed. He has no way of hurting Ultron--he can only dent adamantuim, not break it.
Also, WM did beat Ultron. He thrashed him around so much that it ****ed up his circuitry, and Hank Pym Jr. went down.
I dunno if Supes could beat Ultron solo...he can't break Promethium and Pro= Adamantium. He might be able to take him off planet if he was smart about it.