HI--- Yes, I don't expect the top coaches to teach struggling girls., but when deciding if it is talent vs. coaching, need to remember that these top coaches pick the top girls who have some really strong natural talent. My child struggles and at one gym, the coaches just wouldn't work with her.
I know, I was being a bit facetious - sorry
And I agree a 'not so talented' gymnast working with a top coach will definitely improve faster and get further than with a 'not-so-top-coach'
They just know what to say and how to say it to get results quickly. Their mere presence also commands a higher level of respect that other coaches just don't have (I speak from experience!)