Who is the greatest cellist of all time?

Leonard Rose was the principal cellist of two of the world's greatest orchestras

Question: Who is the greatest cellist of all time?
Position‹5 of 7›: Leonard Rose is the greatest cellist
Argument‹2 of 3›: Leonard Rose was the principal cellist of two of the world's greatest orchestras

At just 21 and 26, he was the principal cellist of the Cleveland Orchestra and New York Philharmonic. Being trusted with such a responsibility at a very young age is a spectacular achievement.

The argument

Leonard Rose achieved remarkable ambitions before the age of 30. He first joined the NBC Symphony Orchestra at the age of 18. At 21, Rose joined one of the most prestigious symphonies, the Cleveland Orchestra. He joined as the principal cellist. Rose’s ability to join a symphony in this position at such a young age shows his extraordinary talent as a musician. Rose’s talent led him beyond the Cleveland Orchestra to the New York Philharmonic Orchestra. Rose was given the honor of being the principal cellist at the orchestra. Due to his skill, Rose performed as the soloist in the orchestra 18 times. Rose’s ability to join two of the world’s greatest orchestras proves that he is the greatest cellist of all time. Rose’s contributions to the orchestras went beyond his ability as a principal cellist. After pursuing a solo career as a cellist, Rose also taught a number of proteges that joined both the Cleveland Orchestra and the New York Philharmonic Orchestra. This led to six cellists in the Cleveland Orchestra and five in the New York Philharmonic Orchestra at the same time. Rose’s ability to join these orchestras and teach musicians that meet the same standards shows his unparalleled talent as a musician. Therefore, Rose is the greatest cellist of all time.

Premises

[P1]Leonard Rose joined the NBC Symphony at 18 and became principal cellist of the prestigious Cleveland Orchestra at just 21. [P2] His talent carried him to become principal cellist of the New York Philharmonic, where he performed as soloist 18 times. [P3] He also taught proteges who filled six chairs in the Cleveland Orchestra and five in the New York Philharmonic at once. [C] Therefore, because Leonard Rose was principal cellist of two of the world's greatest orchestras, he is the greatest cellist of all time.

Counter-arguments

There have been many cellists throughout the years that have joined the same orchestras that Rose was a part of. Some musicians have joined these orchestras at a younger age than 26 and 21. Therefore, the age that Rose joined these orchestras does not prove his ability as the greatest cellist of all time. Additionally, it is not uncommon for a musician to become a teacher, especially after their experience in an orchestra. As a talented musician, it is no surprise that Rose could teach cellists his skills. This means that Rose is not any more talented than other cellists that have played in orchestras and then go on to teaching at music academies later in their life.

Rejecting the premises

[Rejecting P1] A principal chair is a professional achievement shared by many players, and the counter-argument notes that others have taken the same posts at a comparable or younger age. [Rejecting P2] A New York Philharmonic post and eighteen solo appearances measure standing within an orchestra, a different accomplishment from the solo careers on which the rival candidates on this question are judged. [Rejecting P3] A successful teaching lineage speaks to his pedagogy, and the counter-argument observes that orchestral players commonly go on to teach. None of the three premises makes the comparison with the other cellists named that the conclusion requires.