Why was the weakest of the 3 the only one sedated?
I don't remember them explaining this.
I know Mr. Glass was there for much longer but the other 2 were never sedated for those few days they were there (did they say they were immune?).
Why even sedate the guy in the wheelchair? His weakness wasn't water or strobing lights, it was...anything. Just some metal bars would have worked. Granted, he escaped when he wasn't sedated anymore but that's not because of his super intellect, it was because of the incompetence of his captors.