Activision patented a new SBMM system in April 2019 (6 months before the release of Modern Warfare). The new SBMM system doesn& #39;t just take your K/C, SPM and W/L anymore... It calculates everything including your movement around the map, the weapons you use, purchases and more.

The patent states that a part of the system is designed for "influencing game-related purchases", which means players that have COD points or a tendency to buy COD points could be matched with players that have purchased in-game items to entice them.

From what I& #39;ve read, the patent also has zero mention of prioritising connection based matchmaking over skillbased matchmaking - Which Activision calls the "Virtual Coaching System". So a casual playing experience and a good connection is second to $$$ (kind of expected lol).

Although there& #39;s no evidence to support that the system was implemented... It does explain why Modern Warfare& #39;s SBMM feels so much stricter and stronger to the previous Call of Duty titles. It makes sense that they needed to recoup lost revenue from the removal of supply drops.