Surpass Nolan Ryan?
In what aspect?
If you're talking 5K+ strikeouts and no-hitters out the ass, that's something I don't expect any pitcher to do for a good while
I watched the last three bottom-innings of the game on MLB TV this morning, and it was simply amazing how dominant Johnson was on the mound, especially with the final two outs being Ks
Another fun fact: Johnson's 13 Ks in the PG rank second only behind Koufax, who had 14 in his perfect game