Meh, overall the quality of the MLS isn't that bad.
Top 10 league worldwide imo.
Idk man. Europe has a lot of leagues that are as good or better.
England, Germany, Italy, Spain, France, Russia, Ukraine, Portugal, Netherlands (I guess debatable but the best teams there - Ajax, PSV - are much better than any team here)
And there's also Argentina, Brazil, Japan. Mexico is better too.
MLS is easily top 20. But I don't think it has cracked the top ten yet.
Maybe it's me being an ignorant American but idk if I would put your last 3 above the MLS... and I definitely wouldn't put Argentina, Brazil, Japan, Mexico above it.
I'm also looking at the leagues top to bottom though, not based on their best few teams.
Agree to disagree but Argentina, Brazil, and Japan are great leagues. And I only say Mexico based on their consistent success in CONCACAF Champions League and MLS's lack of success.
Brazil's world-class talent nine times out of ten (probably ten) starts out young in the Ligo do Brasil. Also, it's very common to see their top talent come back to play as their career winds down (Ronaldinho, THE Ronaldo, Fabiano...)
I wouldn't call you ignorant at all. A lot of those leagues don't get any coverage here. But I still think they are very very good leagues. Some of the leagues' best teams are good enough that they make their whole league better than MLS. (For example, Shakhtar, Dynamo Kyiv, Zenit, Ajax, Benfica, Porto, Braga...)
Don't ask me to tell you about the J-League (Japan) because I don't know much. But from what I've seen and read, it's a top league in the world.
That said, MLS is my favorite league. I support Sporting KC first and foremost.