The only similarity between CoD 4 and Halo 3 is that both are FPS? We are not talking merely just about button config right.
I own both CoD 4 and Halo 3, and I haven't played them for two months now but I think I remember correctly that in both you can only carry two weapons and some granades or something to throw. Basic similar controls: strafe with one analog stick, look around with the other. Shoot with the right trigger etc.
I have played Overlord but not Pikmin I admit, but I have seen footage of Pikmin and I believe your point about their similarities, but is that such a bad thing? If you just did not like Overlord then that is fine, but don't you think it is unfair to criticize the game for following a good already established gameplay mechanic?







