Sucker Punched

I don't feel I can give a fair accounting of Zack Snyder's new film, Sucker Punch, without revealing plot details, including the ending.  SO, be warned: Full Spoilers On!

Sucker Punch is the tale of ... well, just whose tale is it?  It's just one of the questions seemingly answered in the film's closing narration, along with some business about guardian …