Two points:
- MLS has a wider variety of talent than most leagues. They have good players that really can play anywhere in the world, and they have **** players that would struggle nearly everywhere else. If you distributed the players on a boss-gash grid, you would see a wider pattern than most leagues.
- Even by watching the league, its hard to discern its place. This is true for any league, really. All you can really determine is how good a player is as compared to others on the pitch. Put him in a different league, and he is a different player. See, Bilyaletdinov, Diniyar.