Train wreck on 07 November 2014
Sony mentioned that PS+ membership was 7.9 million as of 9.30.14 (790k average signups a month lets say 8.7m for October) so with 1.6 million online players you have about a 18% attach rate.
I'm sure with total sales and total ps4 consoles the figure would be the same or close to it (~ 2.43m first week).
