Technically and design wise I think it improves on the first in basically every way, it's difficult to compare the story though since the first was much more self contained (if such a thing is possible in a multiverse movie lol)
I havn't seen the first one in a while, but I left the theater last night feeling the same way I did after the first one, fantastic movie. I'd say theyre on par with eachother.
It’s good. It’s big and it’s fun. I personally like the first one more. The writing is so tight and inspiring it’d still be amazing even if it visually didn’t look half as good as it did