Re: Hmm. You're right. I think may (?) have found the problem?
...Batman is not an inventor. He is a very clever man, but he is not an inventor. And he didn't 'make his car, his helicopter, and many other things' - he's freakin' BRUCE WAYNE! He paid someone else to make them for him, then customized. And Black Canary has a 'powerful birdsong', does she? My, my, I can just see how this will go:
BC: "Stop, you crook, or I will take you down with my powerful birdsong! Very well, I warned you!
Something tells me that the SuperDictionary was written by people who had not actually read the comics - or ones who HAD read the comics, but were drunk.