I have never understood how discovering and verifying that China had a butterfly effect on the core principles of Daito Ryu and Aikido is relevant to the acquisition of relevant martial skill. Maybe it is just an academic pursuit?
Anyone who is effectively doing similar stuff can be a resource for us, and they have been for a while now. I don't see how the nationality of that resource is significant.
Based on my understanding of how much good CMA is out there vs how much good JMA is out there, I think its much more likely these days that we would be a resource for them.
The argument is that there is much more than a butterfly effect.
Of course, there's plenty of bad CMA out there (just as there's plenty of bad JMA) - but the Chinese models, tend to have a more detailed and thorough methodology and terminology. That's why many people find it useful.
Just being able to do something doesn't mean that you're able to pass it on effectively. That's why so many star athletes turn out to be crappy coaches.