Killzone is the typical case of a game that looks great, that have a solid idea and talented people behind it, but didn´t get enough time or enough resources to make it what it could have been. I think that with some months more of developing, it could have been something incredible, because there are very interesting ideas and a world with a conflict that is worth to play and care about it.
The difference here is that Criterion is a stablished studio with endless resources now they are in EA. Guerrilla is almost a rookie with too much pressure on them, so the confidence in one and aonther can´t be the same.