Not surprising given that the average episode of Batman cost $150,000-$200,000 more than X-Men or Spider-Man.
It shows. The art style lends itself to being better animated anyways. At the time the Marvel cartoons were pretty awe-inspiring in their detail. I mean they really looked like comic books on TV. But man they have not aged well visually except in screen grabs.
Also I found the flashback in TAS with Batman's bat only logo.
From Robin's Reckoning part II. Not a good shot though. I remember there was a scene where he jumped on a car and the lighting was really incredible and it showed off the bat logo more, but I can't even find the clip on Youtube.