Have you actually read the rest of this thread?
I've been talking all along about how people who've never read the comics or watched the cartoons can be aware of ideas that belong to those genres, if they belong to pop culture.

You know a lot of people who went to see The Transformers movie who:
Never owned a Transformers toy
Never watched Transformers cartoons
Never read Transformers comics
Didnt know Optimus Prime from Bumblebee

Ask yourself this: How were they aware of the Transformers, then? Because we both know that if you said "Transformers" to them before the movie was advertised they wouldn't have said "WHU? Trans-what? Transvestites? Are there transvestites around? Where? Where, old chap? I can't see them! Have I gone blind?"

Whichever complicated witchcraft allowed these people to become aware of the Transformers also makes a similarly large amount of people be aware of the JLA... even if they've never owned a JLA toy, watched a JLA cartoon, read a JLA comic, or if even if they don't know Wonder Woman from Hawkman.