"Well, no. I believe that it's not at all impossible that some of the performances that I've heard so far by some pianists may be superior to my own playing because those are two totally different acts altogether"

Leo Ornstein's quote recommends that he is humble and open up to the concept that other pianists may be much better than him. He acknowledges that his own playing is not always the best, which it is possible for other pianists to be superior to him. He also implies that playing the piano is a subjective experience, which various individuals may have various analyses of the exact same piece of music. He is also recommending that his own playing and the playing of other pianists are 2 various acts completely, which it is possible for one to be better than the other. This quote shows that Ornstein is positive in his own abilities, but also open to the idea that others may be much better than him. He is not afraid to admit that he might not be the best, and is willing to learn from others.