who is better Batman or Superman

[Mummelmann]

Batman actually keeps (or kept) a ring set with kryptonite, that he conveniently uses in an issue where Poison Ivy charms Superman into attacking Batman and co.
I don't remember where he got the ring, but when I read the comic I was like; "Ahhhh Gaaawwwdd..." it was a little silly imo.
And; yes Superman is way too powerful, much like Chuck Norris or Arnie in movies, you know they're gonna get resistance (and a huge showdown with main baddie) but nothing is gonna stand in their way for long.
Batman has gotten his ass handed to him dozens of times, being beaten to near death at least thrice and his companion (Robin) actually gets killed, very rare to have sidekicks killed in hero comics.