I haven't tried Oudy Woody, but many Arabian synthetic ouds I know of have a very sharp, metallic opening, that however disappears after a while. Mukhallat Malaki is supersharp in this respect. Even the Montales are a little sharp, though they're really not as metallic as that. Clearly, they have to be used in small doses. Paired with rose or saffrony materials, they are less dark.
In my small experience, true expensive ouds do not have this metallic/sharp edge. But they are extremely potent, dry, woody-leathery, almost like very rotten wood.