I'm not sure if they're actually better at seeing the truth, than building a more complex mental model of the world and its processes. If anything such ad-hoc modeling tends to be an obstacle that obscures the truth, rather something that reveals it.

A lot of very smart people call themselves skeptics and are very keen at questioning what other people believe when it is not what they believe, but are incredibly blind to the fact that they make assumptions on their own that they have very little basis for.