It says in the blog post that it's 1% faster than CPython (which means that it's as fast as CPython really) on their benchmarks, while PyPy is much faster than

It says in the blog post that it's 1% faster than CPython (which means that it's as fast as CPython really) on their benchmarks, while PyPy is much faster than that on the same benchmarks. Check speed.pypy.org and speed.pyston.org