Surely they mean "little web programming knowledge" and a lot of Objective-C knowledge. I don't really understand this page either:
http://techcrunch.com/2008/09/04/cappuccino-brings-cocoa-lik...
"There are other advantages to basing things in Objective-J as well: advancements in the Cappuccino frameworks don’t wait for the slow emergence of new standards, developers only deal with one language, and Cappuccino comes with useful language features simply not available in JavaScript."
Isn't that backwards? New features come out in Javascript and I have to wait until they're incorporated into Objective-J to use them?