Isn't it great to be an American! We are such a combination of everything and everywhere. It always amazed me to be in another country and hear them talk of us. They admire us yet when trying to put the finger on who or what we are, it's a moving target.
You are correct in an accent may not equal success. But there is something in a (football) soccer rich country that cannot be denied. Knowledge base.
Funny idea...we all have an Euroasianlatinoafrican accent in a way don't we?