Looks like performance comparisons are very popular among the development folks. My last post about relative performance of BeanShell, JavaScript (Rhino) and Java was listed as picks of the week in JavaLobby's weekly Newsletter and is attracting fair amount of traffic.
One of the readers, Jim Adrig, sent me the jython version of the test program. BTW, Jyhton was also suggested by one of the commenters.
So, I took the suggestion, installed Jython and have updated the article with the observed performance figures.