i do believe that some styles are taught differently in closed door environments than in public. by that i also want to say that i think the modern idea that all info is public and that there are no secrets anymore is a bit foolish.
that being said, it would stand to reason that a performance in public would be markedly different than actual authentic forms and application. if you had something worth having, why would you give it away in public for free?
D
I love the smell of iron palm in the morning, it smells like.... victory