No? I just made a comparison, I said nothing about intelligence. In Sherlock that part of her personality is showcased through her ability to know how to keep Sherlock off track, make him unable to read her, her interest in the way he solves his cases, and possibly how she made him help her at the very end. Also, I think, the way she handles her rather complicated life in general, up until the events of Scandal.

It's not as if following him in the original required unusual intelligence either! And she didn't suspect a thing until she realised she'd betrayed where she'd hid the photograph. Original Irene Adler had also been warned about him, even if it had been some months earlier.