I don't know why many people are complaining about the AA version. I see people crying a lot about this only because it's not a sequel of the first anime. Why would you want a sequel of the first version of this? I see people saying this is kinda 'cringe' because they're lesbians (i don't see anything wrong with it, but idk, just otakus averages being that) and ironically the first version was even more 'cringe'. An Aria who gets shy about childish things, having a virgin protagonist and a basic trama that is even less interesting and more predectible than AA.... that's what is thefirst version of the anime.

AA not just has better characters, it improved the personality of Aria, she is much better, mature and individual in this ainme, and it's the same for the ex protagonist even if he is a secondary character here.

I defend this anime, I will give you an advice: Don't let comments from silly kids with average tastes affect your view of an anime / game.
First look at it, then justify it for yourself

So yes, Hidan no aria AA is better than the original.