Originally Posted by JemyM 
Saying "it's the same" after playing the demo is a quick assumption. Not to give any spoilers but CoD4 had lots of very surprising levels and you never really knew what to expect from one level to another which is one of the reasons for why the game have received such good reviews.
Agreed - I don't know if it would be my 'shooter of the year' … but that is only because of the other great choices!