Answer
Beethoven exceeded Clementi's reputation in his day because he was a more innovative and influential composer. Clementi was a skilled pianist and composer, but his music was more traditional and conservative than Beethoven's. Beethoven, on the other hand, was a revolutionary composer who broke new ground with his innovative and expressive music. As a result, Beethoven's music was more popular and influential than Clementi's, and he quickly surpassed Clementi's reputation.