Hi Morley,
The performance should be in the range of Headless Client, thus pretty fast.
Also the pages are not JSP (as this is server side code) but HTML.
You hint that the richt client is slower in fetching data from the server.
But it’s in fact more efficient than any HTML solution since it caches already retrieved data on the client. Not so with any pure HTML solution (which Web-client is)
Hope this helps.