I think The Batman, while it definitely excels at the mood-heavy, slow burn, "vibe movie" thing-- it does kind of lack that show-stopping, "holy sh**" factor, which I think is a big part of what makes it a tough comparison. If you think of the moments in the film that pop out-- Batman's intro sequence, the Batmobile chase, Batman escaping GCPD, the Colson bomb sequence...they're all great moments, but they also do play like variations on beats that we've seen before that were also done well in those previous versions. And it's not to say that those moments aren't handled really well in The Batman. But it does create more of a feeling of the movie feeling perhaps a little too much like a greatest hits collection which may be why it's harder for it to leave as big of a mark as some of its predecessors.
The thing about the Nolan films, say what you will about them, but TDK and TDKR delivered those "Holy sh**, I cannot believe what I just saw" moments in spades. And not as in only a shock value way, but just moments that are legitimately so breathtaking and executed so brilliantly that they are immediately etched into your brain forever.