The answer is very simple. what gameplay do you focus? If you make a very fast shooting game like dark - splatter should be just a very intense p a r t of the game.

If you make a slow rocknroll zombie game like me - splatter is the main part of it.

I am very big fan of the postal games from running with scissors. If I would not see the expected high end violence - i would not play postal.

I am also a big fan of call of duty.
From this point of view, I expect loud shooting fx, big and dramatic scenes. Splatter is a part of cod - but not the main.
And so - the scenes are in the background but included.