While I'm not Sneak Dog, I will agree with him, and point to Mutant & Mastermind for a successful rule-heavy system that went that direction. It doesn't matter if you are using divination magic or if you are just "Movie Sherlock Holmes", those two abilities have the same end result.
[Unless you're trying to counter it. Interactions between multiple powers is when their precise description starts to actually have an influence on the gameplay.]
Though, when I say "I agree with him", I mean that I prefer RPGs that go that way. But I definitely don't consider that every RPG should necessary go that way.