The next morning, yeah, this is mostly putrid. The script is awful, but that was almost a certainty when this project was announced. That wouldn't be much of a problem if it wasn't a stylistic mess. 300 and Watchmen, despite their flaws (300 moreso), are both well-made movies. Sucker Punch is definitely not.
But it's still nice for a filmmaker to tell a story in whatever odd way he wants to because the cinematic medium allows him the freedom to. Isn't art wonderful?