UV did Zeno dirty, he's canonically the most powerful being in the multiverse who cannot be defeated by anyone (Daishinkan very much included) and yet he got oneshot in a manga where every character gets 50 new forms and now Dai gets revived with another new form and Zeno still doesn't. Yeah he "wasn't a fighter" in the sense that he has no fighting skill or experience but no one in the multiverse should be able to harm him and his attacks are more than strong and fast enough to kill any canon DBS character even if he just throws them around randomly. ARJ could have made an actual interesting fight with him by giving him a new form that allows him to have more skill (like Ultra Instinct on a much higher level) but no he gets fodderized
