I've seen that happen with other mocap files, so it isn't exclusive to Credo Interactive. It's simply the way that a given Poser figure's skeleton is structured, compared to the skeletal structure used in the mocap recording process. Have you tried the archery file with Posette? Not good. On the other hand, Michael 2 P4, which has the same skeleton as the P4 Male, turns out quite nice. The Megamocap files aren't in BVH format, so you'll have to bring them into Life Forms for conversion anyway. I haven't installed the software yet, so I don't really know how well they'll work.