I'll give credit where it is due--SeaWorld has been making really great strides and tactics, and has been benefitting off of those tactics. Add in that their licensing their branding externally, odds are this is being bolstered by those licensing profits and the attendance increases.
I also think if this goes forward and gets the approval (This isn't Scott Ross's first time trying to get Cedar Fair), I am going to be shocked if Michigan's Adventure, ValleyFair, Dorney Park, and Gilroy Gardens survives being part of the company (and maybe WoF as-well).