PS4 doesn’t do 110m. Will be 100m-105m. On the low end of that.
^ remember this post when the PS4 does +16m this year(2019), and ends up around ~108m sold through.
Your low prediction should be beat this time next year (jan 2020).
Necro-bump this 2020: http://gamrconnect.vgchartz.com/thread.php?id=229249
Bumb in 2021: http://gamrconnect.vgchartz.com/post.php?id=9047071