How? The online had well balanced guns THAT LOOKED DIFFERENT *coughmw2cough* and were incredibly fun too use. The attachements worked well and were DIFFERENT AS WELL. Singleplayer had fun addictive story which gave you a satisfying ending that left you going "WOW" There is no cheap stuff like a heartbeat sensor or thermal scope. It is all skill. It is by far the best of the CoD games.
just because its the best doesn't make it good
alright lets say you have 5 loafs of stuff, and one of them has a piece of half-eaten corn in it
obviously the one with the corn in it would be better than the others value-wise, but does that mean that its GOOD? No. No it does not.