Nope, Avalon isn't jealous...Avalan are obviously just jealous, they should have just congratulated Revenge on their accomplishment but instead of that, bashed on them for their method and made claims their own effort will be smoother when they had no idea of how Revenge went about it.
Just my observations from a neutral perspective.
I'm not even being biased. I'm not in either clan.
So if Aileron isn't lying (which I'm 99% sure he's being truthful), his DPS wasn't all there. And he isn't going to zerge Mordris with the glitch exploit. In one of his posts (I think the one where he tried Mordris before loots and after secret health patch), he stated that he could of killed Mordris by idol zerging, but that "Wasn't the Avalon way". (Quotation marks are NOT sarcastic)
Also, Revenge's kill involved major bug exploiting, and I'm willing to bet 600k that they wouldn't have even gotten to the "r" in Mordris' name without the bug.