Not that it's of much use to anyone but here are my Steam stats for all my Paradox games:
Crusader Kings II 22 minutes
Europa Universalis III 5 minutes
Europa Universalis IV 5 hours
HOI3 27 minutes
March of the Eagles 56 minutes
All in all, about 7 hours total. Trust me, that is in no way representative of my Paradox Interactive Games game-time. I probably spent more time than that just going through the CK II tutorials before playing my first Scottish campaign.
I've seen polls like this on other boards and, as you would expect, the majority of people posting on a game's boards turn out to be MP players because they spend a lot of time online, they socialise with their fellow gamers on the boards, etc whereas the SPs, like myself, end up in the minority. Just look at my post count and I've been here for 7 years. But usually, someone on the design team will post in said thread that the majority of players don't post on their boards, don't play MP etc. The offline SPs are the silent majority. Not so here. Reading through this thread, there do seem to be an awful lot of SPs in proportion to MPs.