Riddler hiding his trophies in all of the hard to access places that need Batman level parkour is proof that he could beat Batman any time he wanted, but he is just having fun playing harmless games with him
Joker got everyone else to go on a murder spree when he took over Arkham, but Riddler is just having fun with his little trophies and little riddles. Iconic villain behaviour, he is so full of whimsy even if he keeps using it to call me a bitch when I collect his trophies










