Rails vs Grails

Albeit we cannot compare rails with grails in a single note, perception is that grails has got better performance. It cannot be blanket stmt as scalability and performance depends on various factors.. http://www.dracoware.com/blog/2008/05/15/a-rails-developers-thoughts-on-using-grails. This link (http://www.dracoware.com/blog/2008/05/15/a-rails-developers-thoughts-on-using-grails/ ) provides a rail developer view of grails which is a web framework that uses Groovy language. The advantage of using grails over rails for ruby are discussed (http://www.diegoparrilla.com/2007/10/grails-diaries-jruby-on-rails-or-grails.html ).. Going thru this, it is individual prerogative than generalized statement on which is good on what.