I realize a comparison of like to like Mythic to Aeonic - the written stats seem far better on Mythic.
However - I'll say that anyone can farm money and do a Mythic; On the quest of Aeonic I can say without a shadow of a doubt, that it requires the most premium players, teamwork, and coordination to pull it off. When I get done with those two fights - I will truly feel more accomplished knowing it took a full team of people to make this work and absolutely no one can buy their way into one without pulling their own weight with it.
I also think there's far too little information and use-case of these weapons and their new lvl 4 skillchain properties for anyone to judge them yet.