They're not comparable, so no.
> I think JRuby is more mature than jpython
Pretty different situations, from 2006 to 2009 two lead JRuby developers were hired specifically for that by Sun (later left for EngineYard) and a third was hired by ThoughtWorks for the same.
For Jython this only happened in 2008, after the project had pretty much gone on freeze due to the original founder leaving to work on the Pypy project.
Compare IronPython to IronRuby instead, and the situation is reversed. Same if you compare Rubinius and Pypy.
> and I know this will start the flames, but I think ruby is clearly better for web stuff
That's your personal judgement, I don't agree.