Tracing it back to it's root, I got these:

What if Bruce Wayne is actually in Arkham the whole time and Batman is just a delusion he has.

What if Bruce Wayne is actually an Arkham Asylum patient. : DCcomics

...but this one expounds a bit on the subject:

What if Bruce Wayne is actually in Arkham asylum the whole time and Batman is just a delusion he has? Would all of his villains be the orderlies and doctors who work there? - Quora

Well according to WatchMojo.com he is:
Superhero Origins: The Lone Ranger

Well if that's the case I might as well put the Scarlet Pumpernickel on the list as well.

Yeah, you gotta draw the line somewhere. Just wearing a mask and talking to your horse is not going to make you a superhero in my book. So is Zorro one too? Guy Fawkes? Captain Kirk?

For the purposes of this thread, and to satisfy our friend Mister N, we're sticking to traditional comic book heroes here --- Marvel, DC, that sort of thing. No wussy pseudo-heroes like the Lone Wanker.

:)

Arguing for the inclusion of the Lone Ranger is one thing, but doing so because he's actually your favorite "super hero", really exposes one's gooey vagina.

Can we get Zorro on the list?

Yeah, I just checked, and unless I'm missing somebody, there are exactly two minorities on that list (Spawn and Luke Cage). We need some affirmative action. There is a black Spider-Man. Just puttin' it out there.

Went with Daredevil just based on the recent Netflix version.

Poor Superman is getting destroyed by Batman. I expected him to get at least one vote...

http://media.giphy.com/media/yEAumMMI02WI0/giphy.gif

Then again, Batman is destroying pretty much everyone so far.

*cough*

Edit: Also, lol @ Puck and Northstar being in the poll. Heil Canada, Alpha Flight 4 evah!