I am using Tomcat Servlet engine for web services. Where can I find a web services example for CQ5? I also use Ant to do my Web Services WAR and wondering if I can use Ant for the build of a web service and if there is an example. I also use SOAP but am looking at using JAX-RS and have coded working example but then the build might be different for CQ5.
I am hoping CQ5 can be made lighterweight and faster than Tomcat but not sure if anyone ever did a comparison between the 2.
It is not available out of the box. Use Apache CXF. The links  might help you to begin with. I am not sure what comparision you are looking between Tomcat & CQ both serves different purpose.