I really think your assessment is just totally off and that you're unable, or unwilling to decipher what this game is trying to accomplish.
Space Marine 2 is a low stakes, one and done, narrative driven, traditional linear shooter.
Jump Ship is a high stakes, highly replayable, player choice driven, co-op shooter.
Honestly, if you see Space Marine 2 here, outside of MAYBE aesthetic (not really), then I have to classify you as clinically insane. They are almost nothing alike.