What do you mean?
75% of US National Team players play in MLS.
"75% of US National Team players play in MLS."
That's sort of proving my point. The US National team isn't exactly a good team.
Many of the guys in the MLS are quite good ....several very good in fact ....but comparing them to some of the European and South American guys is like comparing a Mustang to a Ferrari. I've seen some Brazilian dudes do things with a soccer ball that should be against all the laws of physics in several dimensions. No comparison.