Japanese Manga or American Cartoon?  

Well it is very true that Japanese anime has dominated the U.S market and also it is more popular with people from around the world.

Disney does have a class of its own and yes it caters to mostly kids and I must say that they have done a good job but I believe they are not being as productive as they once were.

Japanese anime has a tendency to capture people from all the ages and American anime had that quality in the past but right now they are failing to capture their own young audiences.

Though I like both but I would say right now the Japanese Anime are on top of the chain.

it depend on the title. I'm not japanese minded nor american minded. I just like to watch. if it interesting, I'll watch it. Disney cartoon is awesome too

I tend to like the Japanese kind better. I think its the way Japanese view manga and anime versus the way Americans view comic books and cartoons. In American people think that comics are for kids, and it is only the really big fans who keep reading them into their teen years or adulthood. In Japan, many high school students and even adults read manga, just as they would read a best-selling novel. Because lots of different ages read manga, there is a lot of variety in manga, from superhero stories for little kids to romance stories for girls, to mysteries and dramas for adults. That makes manga more interesting to a wide range of people around the world, too.

Anime has many genre. In japan their produce lots of anime every year. It's spread in every part of the world.
In america, cartoon storyline dominated by action and super heroes, not many that have another genre except maybe disney.