You are lying. I have the synopsis of the Issue #3 here.
http://www.avengersassemble.us/ema-3.html
It says nothing of Binary losing her power.
They even fought an alternate universe Binary, called Lady Marvel (who is not Binary.) Morgan used Scarlet witches reality altering power to make a new Universe called Morganverse and her own Avengers. Sounds like Scarlet Witch is stronger than Oa to me).
Thirty-Nine Avengers? Presumably the Beast's counting the heroes present in this scene: Sersi, Starfox, Spider-Woman (II), Quasar (III), Swordsman (II), Magdalene, Darkhawk, USAgent, Black Widow (II), Sandman, Tigra, Moondragon, ***BINARY***, Rage, Iron Man, Vision (II), Black Knight (III), Scarlet Witch, Stingray, Machine Man, Hercules, Firestar, Justice, D-Man, Quicksilver, Crystal, Falcon (II), She-Hulk, Stingray, Living Lightning, Firebird, Sub-Mariner, Black Panther and Beast himself. "