Do you think he was holding back?
At the start of the fight, Adam easily restricts Providence, then basically doesn't fight you, if you just do nothing, Adam never seems to attack. He only might attack rarely when you attack him, and even then it's like one light attack.
After all that attacking by Eve, and him not even seemingly blocking, he seems totally okay.
Afterwards, providence keeps attacking him, and its attacks basically do nothing, they are all easily blocked without Adam even getting up or moving. With a swap of his hand, Adam knocks both Providence and Eve a good distance away.
Then he basically zips to and one-shots providence, a unit that gave Eve real trouble, and he does this without harming Lily at that, a feat even more impressive (granted, she was holding back due to Lily being inside and not using angel powers, but still, and Angel powers come from Adam anyways), then easily dodges Eve's attack afterwards.
And he does all this prior to transforming, so even without transforming, he seems really powerful.
So do you think, Adam could've beat Eve (tbf, even without transforming) but didn't?