Yet the growth and insights acquired at Diaghilev 's Ballets Russes clearly exceeded that at Mariinsky Theater .
Diaghilev 's Ballets Russes was then unexpectedly revolutionizing the ballet world .
Yet the growth and insights acquired at Diaghilev 's Ballets Russes , which was then unexpectedly revolutionizing the ballet world , clearly exceeded that at Mariinsky Theater .