Looks like a pretty good article:http://www.dtschmitz.com/dts/2008/09/catalyst-perls-answer-to-ruby-on- rails-and-ajax.html
I've never coded RoR. We've got thousands of lines of Catalyst at $work now. I'd be interested to hear Ruby folks thoughts.
j Omaha Perl Mongers: http://omaha.pm.org