So attach rates of:PS4 (14 months) - 81.8 million software sales*
PS3 (14 months) - 51.4 million software sales**
PS2 (15 months) - 49.8 million software sales***
PS1 (28 months) - 98.0 million software sales****
*PS4 cumulative hardware sell through was 18.5 million
**PS3 cumulative hardware shipments were 10.5 million
***PS2 first 7 months were Japan only, total cumulative production shipments were 14.95 million (Japan = 40%)
PS4: 4.4
PS3: 4.7
PS2: 6.6
I'm sure digital has had some notable impact on recorded PS4 game sales though.