i dunno, i like the atmosphere the cod engine can create, the actual content when you break it down is not mindblowing but it is pulled together very well. they must have great leads and a fantastic art director.
a guy from work said he completed the SP in around 5 hours, but it was a nonstop 5 hours of joy with only 1 mission seeming a bit "filler".
a shame, i feel a bit iffy about paying more for less (it took me about 8 hours to do the cod4 SP).