The title, which _is_ from the original article is a bit misleading, no?

The performances of the methods he worked have been bumped up 63% in maximum, 8% in average. His patches were applied to Ruby trunk in Oct. 5 this year.

I'm not knocking the kid's contribution, but the title oversells it a bit, implying that the kid improved Ruby 1.9's overall performance, which apparently isn't the case.