Except for number of chapters and voice actors all of the above are common cliches in books for teens, shonen manga and hollywood blockbusters.
Take any of stories like: Harry Potter, Starbirds, Naruto, Evangelion, Supernatural, Brothers Grimm, Hellsing, whatever really and find 5-10 similarities between this and AnE. Easy peasy (and I didn't even read/watch them all).
I know that there are a lot of series with similar storylines, but like you said, there are usually like 5-10 similarities. These two series have more than 15, which is kind of excessive, while also running at the same time.
And yet, they don't really feel like the same story at all... I think that's remarkable.
Depending on what you think is a similarity you can get... any number of them. It's just how the stories are written, what sells with the target audience.
The protagonist is a teen (always) with big eyes (always) and he fights a very bad guy, because what would the story be about otherwise? And then, let's make him moody and his past dramatic, how about being an orphan (and you don't kill their parents in a car accident, how about being killed by the bad guy?) Not special enough? Let's make him half-vampire/demon/devil/titan/werewolf or invent some other way he should get superpowers. But - superpowers without some kind of sacrifice or evilness is for kiddies. If he had a cool and useful superability shouldn't he has fans and followers? No, because it wouldn't be emo - he needs to be feared and/or despised for some far-fetched reason (so we like him but people in his universe don't). And then there's gaining trust, finding friends, falling in love, that kind of stuff. Traitor friend, "I wanted to die" friend, brainy friend, I believe it's all tropes.
And the same voice actors/composers? Well, there are probably studios which specialize in some types of manga and they have composers and voice actors who do heroes/love interests/comic reliefs/bad guys and so on. It's not a coincidence, these things come in pairs.