Thomas Shey
Legend
Well, that's neither here nor there. Look upthread to @pemerton's response to the Warehouse example where he does exactly what I'm alluding to - a consequence that is an "opportunity" - note opportunity in this sense simply means "chance" as in an opportunity to move forward, backward or sideways, as it were. However, I do think that you are right that many people consider this to be problematic and that any "consequence" of a success=failure, no matter what.
But, I do think that a this is the primary sticking point when trying to compare the two systems. The insistence that one system must adhere to the mechanics of the other. It does work the other way too. A player who declared, in a trad game, that the warehouse guard was his friend from school would be very much violating the intent of the system. Players simply don't have the authority to do that and that's largely intentional. You can't "explore and discover" if you can edit what you find.
Though there are interim systems. In a lot of systems with vigorous metacurrency and dramatic editing, popping one (or in some cases more) metacurrancy to do that would be considered at least potentially legitimate. Its just not something you'd get to do as a matter of course.