even with ghost rating, you get some people who play many games and have shit rating and some who play very few games and have a great rating (see graph below)
getting to 54% means just getting above the mass of people at the center (in either GR of points - which i think are similarily ordered... there are hundreds of accounts which have 100

and will never play another game... the bias the % data)
https://www.google.com/fusiontables/embedviz?gco_chartArea=%7B%22top%22%3A%2230%22%7

&containerId=gviz_canvas&rmax=250&q=select+col1%2C+col2+from+816576+&qrs=where+col1+%3E%3

+&qre=+and+col1+%3C%3

+&qe=&viz=GVIZ&t=SCATTER&width=500&height=300