If the SP is story driven, and If your character is going to be above average in combat, it'd be nice if people would acknowledge that fact. What always bothered me about most CoD games is that you're supposed to be this average soldier, yet you mow down like a million people by the end of the game, yet nobody gives you a second glace. Though, they do expect you do do everything (RAMIREZ!)
It wouldn't have been so bad if everybody acknowledged the fact that you're basically an ubermench, but no, you're just the "average soldier" who kills the entire opposing army by himself. It's poor story design.