Sounds like you really like your Tron so that is a very easy one. No. If you were just so so on it then heck yes but why get rid of a game you love for one you are not sure about?
Iron maiden is fun and I think it would go well with Tron but I would never recommend to someone to sell a game they enjoy for one they "think" they will enjoy because of the reviews. Wait till you can play it more. If you enjoy it more then go for it if not then don't.
Here's another thought. Tron is a desirable game that a lot of people want to have in their house but may not be OK with the price they fetch. Maybe you could find someone that has a Maiden semi locally that would be willing to do a temp swap. They you both can get your fix in.