Everybody knows that this game should have been a 40 USD expansion, the same way people thought Halo 3:ODST should have been an expansion for Halo 3 (original).
People often confuse this game with Modern Warfare 2. Hence, the name Modern Warfare 2.5
"Naw dude, I'm getting on Battlefield 3 and then Halo bro! Screw that Modern Warfare 2.5!"
"Dawg, you right! I'm gonna play with you hold on real quick!"
"OH yeah MW3! This will be soo awesome!!"
5 minutes later...
"WTF this is just like MW2! This game is more like Modern Warfare 2.5 what a rip-off!"