SDL will be a smashing success, even if it isn't.
Not because Robert A. Iger wants it to be, but because the Chinese Communist Party wants it to be.
And, from what I am hearing (and, yes, some details need to be left out to protect people) the reason this even exists as a concept is because Shanghai delayed (or worse) the mega-E-Ticket Captain America-themed coaster hybrid for DCA. This can be done relatively cheap. And it can be done in FL, where nothing else Marvel that anyone cares about could.
The new SDL will pass all Disney attendance records no matter how many visitors actually pass through the turnstiles.