As I said, it's not a yes/no question, and the answer depends upon the meaning of "surpassed".
Well Chris, if it's not a yes/no question then there isn't a definitive answer to "Has anyone surpassed O Sensei?" (and I think the OP was asking the question with regard to technical expertise). If that's the case then fair enough. Subsequent statements regarding the abilities of others, with O Sensei being used as the so-to-speak standard candle of measurement, must be seen in the same light.