"It would be soooo nice if they would publish their statistics. Say like the top 90% of sales and all sales over $1,000 a month in total come from 5 individuals, or even list without dollar figures, the top 10 in sales each month. That would be too transparent though, right?"
If I was one of those people, and I am not, and they did that, they would have a paper from my lawyer on their desk before sunrise of the following day.
And even if you had that information, It would be worthless to you as far as creating sales for yourself.
Nothing hinders your own sales like worrying to much about everyone else's. Not to mention it is none of your business what any one else is doing.