I'm not limiting the comparison to their primes. Pedro has had a long career, over 3,000 k's and 200 + wins. All of his key indicator ratios and measures are better than Clemens over their careers, not just their primes. The only #'s where Clemens is better are cumulative stats from pitching into his 40's. If you stopped Clemens career 9 years ago, all his numbers would lag Pedro.