Yes,the batman is most important character of DC

He is probably the main protagonist in DC but you can’t say he’s the most important I’ve seen comics and tv shows and movies (animated) where there are other more important characters. Superman is sometimes more important I certain aspects like if a story is set in Metropolis, Supes is most likely going to be the main guy.

Yes in dceu batman is the most important character but whereas in comics animated series superman and other heroes play same important rolee

yes its mainly him but then there are heroes like superman who is also very important

He is very powerful .