Your comparison in NOT valid. Remember that while Rome II had to be activated via STEAM even if the owner has the CD version that is not apply for M2TW. If M2TW is 3rd in STEAM you must add the hundreds of thousands that bought the CD VERSION 15 years ago and still play with it .See that despite M2TW exists in STEAM most mods still refer for the CD version. So the numbers must be compared between Rome II, Attila and the next TW series but not vs M2TW that still dominates in TW HARDCORE FANS.