Most Dzogchen masters in the 4 TB schools are Nyingma in terms of numbers and many of them, if not most of them, & their masters like Chatral, Dilgo khyentse, Trulshik etc. etc., often stated Dudjom Lingpa & then Jigdrel Yeshe (mind emanation) were more realized than anyone else in their time including their rainbow disciples when they were alive. My opinion, often wrong as a bad follower of Dzogchen masters, does not matter nor do I really listen to people making their own novel creation using Dzogchen plus other doctrines for a business as we unfortunately see in the west these days but other Dzogchenpas & their masters' opinions though if they think another master was the most realized is perfectly fine by me as I said & indeed right for them. I don't really care about this realization levels announcements: just stating what the greatest Nyingma masters including school heads often said. Secondly the point being made was that as stated for various reasons here someone not manifesting rainbow body does not necessary mean being less realized than others, including those followers getting it via their terma, which is why those 2 Dudjoms & their rainbow disciples were being mentioned to prove a point for Ayu Khandro's case.
Dzogchen masters I know say: 1)Buddhist religion essence is Dzogchen 2)Religions are positive by intent/fruit 3)Any method's OK unless: breaking Dzogchen vows, mixed as syncretic (Milanese Soup) 4)Don't join mandalas of opponents of Dalai Lama/Padmasambhava: False Deity inventors by encouraging victims 5)Don't debate Ati with others 6)Don't discuss Ati practices online 7) A master told his old disciple: no one's to discuss his teaching with some others on a former forum nor mention him. Publicity's OK, questions are asked from masters/set teachers in person/email/non-public forums~Best wishes