Attached Link: Basic Principles of 3D Animation

FWIW, both the RvB, RWBY White/Red and The Drop all use an intense amount of hand keyframed animation, in combination with custom, not off the shelf BVH. That's the magic. Keyframing is where the brilliance comes in with all these samples, and there's a ton of it in all the samples, using Poser's graph and keyframing tools. Apparently, they do work. There's also liberal use of dynamic cloth in the RWBY samples.

Wolf, seriously, produce some animation as good as any of the samples I've included and I'll promote the living daylights out of it. Maybe you're creating the next Life of Pi, hence the need for uber realism, I don't know; but honestly after looking at your work, I'd suggest mastering the basic 12 steps of good animation. The tools are irrelevant if you can master those steps. Start simple, create a stellar story and help us help you to inspire more folks to do animation in Poser. That would help move Poser and its animation capabilites further forward than laundry lists of why you can't.