Interpreting the revived review

When determining how to take Richard III for the audience, there are plenty of reviews out there ready and willing to tell how a person should react to Richard III. For instance, there a nice review in A Source Book In Theatricak History edited by A.M. Nagler.

It documents a follower of Kean. Kean, renowned for his interpretations of Shakespearean tragic roles, notably those of Macbeth and Iago. The follower reacts to 3 different times he attended Kean's performance of Richard III. He states in the first viewing Kean had moments where he felt the authenticity of the speech, but at most Kean had fail to come across. The 2nd performance, he begins to sound like a director wondering why Kean had change most of his performance, speaking faster at parts and slower at others. The last showing he says Kean has become a master at performing the role, he strikes almost every element believable to make Richard which helps the other performers, such as Anna.

This is great to know because this performance was in the 19th century and with today's works and elements we could find the power of the performance to get a review like this on the first try.
Source:

Nagler, A.M. "Edmund Kean's Richard III." A Source Book In Theatrical
History. New York: Dover Publication Inc., 1952. Print.