It was steady. No drop. AOS finale ends on a cliffhanger. OUAT’s does not according to Adam and Eddy. They said it could work as a series finale, so that’s why many think they could renew AOS instead of OUAT.
The way I see it, it’s probably better for them to do it this way.
This is all A and E’s fault, they got greedy. They could have promoted this as the last season, and now look. They’re morons and should never be in charge of shows ever again. Now OUAT won’t even get the promotion it deserves for a series finale.