Yeah. That's a head scratcher for me too. On top of it, trying to get the Enemy Within Campaign to run well. Like I'm trying to present a mystery, full of intricate and complex motivated NPCs, across a lived-in campaign world, and I also have to understand all of these rules?The latest edition of Warhammer Fantasy RPG. It was just too much. I thought about having to know the game well enough to run it, well enough to teach other people how to play it, and didn't even finish reading the book. Shame, as it's a gorgeous-looking one.
Again, maybe I'm not smart enough. I've been gaming for 40 years, run several games weekly, but I just can't do it? Maybe the problem is that I'm trying to do too much? Like if the only game I was trying to run was Warhammer Fantasy, with the single campaign of Enemy Within, putting all of my hobby time into doing it - I think "maybe" I could do it justice.
Same thing with Orient Express. But at least the rules of Call of Cthulhu aren't actively working against me.