Not for the purposes of this discussion, they aren't. For some reason you seem to have disconnected The Oracle actually has knowledge of the future from whether or not his prophecies actually true. Why you've done this, I have no idea, but, but it makes no sense.
Whether or not prophecies will actually happen is not somehow divorced from whether or not the Oracle's abilities are real. We know they're real, and we have been given no reason to believe has given any false prophecies.