T-Rex: Batman, who was great at fighting crime, smiled. His one-man war on crime was going great!!
T-Rex: It HAD to be!
T-Rex: Because dressing up as a bat and punching criminals until they stop doing crime isn't the sort of thing you'd keep doing if it WASN'T having a solid, sustained, and measurable impact. It MUST have been going great for him to not just keep it up, but invest in a Batgyro, and Batmobile, and Batplane, and so on!
Utahraptor: Yeah, it makes sense that Batman would be super effective! He's BATMAN.
T-Rex: Exactly!
T-Rex: So Batman's SO good at fighting crime that he HAS to win, right? He decides to fight crime - the very CONCEPT of crime, an impossible task - and he DOES it, because he's BATMAN. So Gotham ends up crime free and nobody's parents get murdered in any more alleyways, THE END.
T-Rex: Therefore, LOGICALLY, all Batman's adventures MUST take place in the brief interval AFTER he starts fights crime but BEFORE he defeats it, which given his skills I estimate to be about 2 weeks, tops.
Off panel: But -
T-Rex: EITHER YOU ADMIT I'M RIGHT OR YOU'RE SAYING BATMAN SUCKS