All of this is just a dream inside Batman’s head, while he’s strapped to a device being pumped full of Scarecrow gas.
I wonder who true Superman’s words are in his dream, if Superman here is just one of Bruce Wayne’s subconscious.
“I love being Superman, But I hate that I have to be Superman. You Bruce… You hate being Batman. But you love that you have to be Batman.”
From – Batman Vol. 3 #68