Is MW2 double XP real time or game time?

How to Rank Up Fast in Call of Duty: Modern Warfare 2 - Strangely Awesome Games

Infinity Ward just Added FREE REWARDS & 2XP in Modern Warfare 2 Update..

COD: How to get weapon double XP tokens in MW2 and Warzone 2.0 - Dot Esports

Modern Warfare 2 players feel “manipulated” by real-time XP tokens - Dexerto

Modern Warfare 2 double XP 'one year' prize found by Mountain Dew fan

MW3 Code Gives Players 4-Hour Double XP Tokens, How to get and use Double XP in Modern Warfare 3 ? - News

Ready for Warzone 2? #gaming #mw2 #warzone2

Double XP event is only for rank this time around?… : r/ModernWarfareII

When is the next Modern Warfare 2 & Warzone 2 Double XP event? - Charlie INTEL

CoD MW2 & Warzone 2: Double XP Weekend Dates & Schedule