By western, I think you’re speaking specifically about American comics and by eastern, you seem to be talking specifically about Japanese manga.
Franco-Belgian comics are aggressively different to comics like Marvel/DC, and comics in Korea differ greatly to Japanese one.
There are a huge variety of comics, including mystery, historical, comedy and so on.
The Adventures of Tintin, Lucky Luke, Asterix & Obelix, Boule et Bill, Gaston Lagaffe and so much more are all popular ‘western’ comics from Europe.
I think it’s incredibly unfair to generalise western comics by limiting them to superhero comics, which are a very American thing. Same with eastern comics, I think it’s unfair to generalise them based off of one country’s works.
All comics have their strengths, weaknesses (some more than others), tropes and genres, and vary greatly depending on the country’s history, culture, religion and whatever else.
I would suggest changing your title to ‘American storytelling and Japanese storytelling’ because that seems to be what you’re referring to based on the comments you have made.
For the record, I thoroughly enjoy American superheroes, although mainly the older stories, not so much the new ones, as well as a variety of manga.