He should’ve been like “nah fukk that. I don’t want any asterisk victories. I don’t want joe complaining that he didn’t get a fair shot. I want him eradicated and I want him out of my life once and for all. I got the W officially but I’m not happy about it and in Australia I plan to show why.” Boom done. You show him as a fighting champion, someone who may be too cocky for his own good, and someone who won’t take shortcuts regardless of where they come fromAs a face whose gimmick is basically "best wrestler in the world," he was put in an awkward position of having to talk around a controversial match where, whether the ref's decision stands or not, he knows he lost from the standpoint of having an inherent sense of honor.
It's different if he's a heel and Joe's a face. He could just harp on the ref's decision standing and how it's Joe's fault he left it in the hands of officiating because he wasn't good enough to get it done outright.