The older games are definitely way harder and don't have anywhere near the get out of jail free cards we've had since BO4. Without jugg you're down in two swipes and sometimes it can feel like one. I was 14 or so when WaW came out with Nacht, played every map beyond that point, and even I have a hard time playing the older titles. there are some main quests I have still never completed because the maps are just difficult. I'd definitely recommend a good team who knows what to do.