IMHO,most martial arts are pretty complete and hollographic in their own right. If I look deep enough, everything is everything. The intention of the observation often influences the information gathered. A punch can be a block, a lock, or a throw depending on how you apply it. There are probably more similiarities in principle than difference. Trying to undertsand one art in reference to another is often too complicated for me. It is what it is. Just relax, breath, and enjoy yourself.