Wouldn't it be a 33% chance of each outcome? Since we know that mundane and paradise do not entail the same degree of "do not want" as the torment, it is within your favor to go through, as you have a 66% chance of not having hell visit you.
This is assuming, this is really such a door, and not just a cosmic.
This is assuming, this is really such a door, and not just a cosmic.