According to this:
http://www.codeplex.com/IronPython/Wiki/View.aspx?title=IP20VsCPy25Perf&referringTitle=IronPython%20Performance
IronPython (Python fo
I'm not sure exactly how you're drawing the conclusion that IronPython is faster than CPython. The link that you post seems to indicate that they're good at different things (like exceptions as has been pointed out).