1) I dunno if that's the same. Sonic resisted story alteration when he was "inside a story" relative to the "normal world." Conversely, Arale's plot manipulation works on the "normal world." It'd be like comparing someone like Bugs Bunny and his story powers (being the literal author) to Dipper or any other character getting into a comic book/TV and controlling it. Just not the same as far as I know.
2) While the Arabian Nights have 1001 stories/universes that comprises the story in which Erazor Manipulated, Arale operates on the same level as Tori-Bot. In other words, the Hypertimelines of Dragon Ball, the various continuities (she references the films, GT, and crossed over with Super, meaning all are within her sphere of control), leaped into the stories of Dragon Quest, etc. Even if we assumed they were the same "kind" of story power, hers operated on a MUCH greater scale than Erazor (and thus Sonic) have ever demonstrated, but her big bad still returned-Compared to when he was PERMANENTLY KO'd by Beerus. Further, her powers are layered and thus a single layer of plot manipulation resistance simply isn't enough to combat her.
So I dunno how that comparison would shake out, but I'd wager not in Sonic's favor. Not to mention Sonic's resistance hasn't been demonstrated to be at all inherent to a Super form, so I don't know why it's even being brought up.