I think it is one of those situations where you would have to see it in action to even begin making an educated decision, given that the two come from two very different worlds. At least with the Wolfman and Godzilla, they come from the same place. So the millimeter sticks because until known differently, it seems very possible that they're close to evenly matched.
That would be absolutely epic. Working together? Even more so. They would probably be close to unstoppable.