There are things I like in LOTR, but some stuff I don't like. Particularly the who quest phase and figuring out who is gonna attack who. All that seems like I was doing simply math for 1/2 the game, which isn't fun.
It may not be fun for you, but it is fun for millions of collectible card gamers and that's what LOTR is very much like. You're constantly solving a big mathematic/logic puzzle. Personally, I love that, but if you don't, then you at least know one type of game you can save money on.
Elder Sign shouldn't be anything like that. It looks like a lot more pattern-matching than calculation. That said, as with any dice game, you're probably going to do better if you know how to calculate probability.