Java EE (Java Enterprise Edition) General Discussion

Hi, I'm researching JSF and Struts and they look identical. Seems like the developers of JSF just took Struts and changed the wording. What I mean is:

struts-config.xml became faces-config.xml
ActionMappings and Actions became NavigationCases and NavigationRules
FormBeans became ManagedBeans
MessageResources became MessageBundle
ActionServlet became FacesServlet (in web.xml)
Both have validators and converters.

So am i missing something?

Also, are there any performance benchmarks that JSF/Struts add to response times?

Thanks,
Mike