The performance of Jacqueline can be called perfect, perfect sound quality. She was holding a special cello that helped her to reach one of the highest. The aesthetic standard in mind is different from one to another, but in common in a general basis. So is she likely to be popular among audience, who are easily to be infatuated with her graceful deeply emotional performance.
No one can feel and tell what the composer felt at that very moment, but one can translate the comprehension of his own into the same, or a different form of art through a certain style of expression in emotion by playing instruments or applying other tools.
To be honest, I am more touched by the performance of Rostropovich, a complete development of the character of a cello.