Can't agree with this. The people with 3k wins in silver league are outliners in the statistics, most people with 3k wins are almost all masters league or above. Of course to get the very top you can't just say that games played = rating, because at the very top the amount of games becomes a less and less usefull indication of skill.
There's a saying that for you to become good at something you have to do it 10000 times.