I have been learning about chi, hana, rasa, and praxis (the Chinese, Japanese, Indian, and Greek theories of aesthetics, respectively) in a class taught by Richard Schechner, and am continuously surprised by the level of overlap within these theories in practice.
Yes, yes, many scholars are probably smacking their foreheads right now, "Do we have another one who thinks all these distinctly different theories are the same and believes in universality?"
The answer is no.
So before you start smashing your forehead into the screen, while I acknowledge major and distinct differences in each of these theories, I tend to concentrate on where they overlap. Ignoring the similarities is just as bad of a trait as ignoring their differences.
The training methods of the Beijing Opera and Indian classical dancers seem much the same. Imitate (including the dance - acting) and eventually you will understand and "get it". They seem to have the same pride for the guru-shisya tradition as well. There is an inordinate amount of attention paid to the eye movement training. And, oddly enough, they also isolate the different parts of the body to create "adavus" that seem to be labeled "jingju" in Beijing Opera. None are really written down but passed along orally.
Perhaps this seems superficial, but I do think there is more to this than meets the eye.