You can import bookmarks and passwords (if you use that feature) from everything but Firefox. So you have to export from Firefox and then import to Zen. You'll have to also install all the extensions you have in Firefox. It just seems like they totally overlooked the possibility of someone coming from Firefox and instead focused on other browsers.

PCs are increasingly complex and there are lots and lots of things that can go wrong with them. Users are desperate for explanations for why their particular machine doesn't seem to run as well as it used to or is supposed to. Snake oil salesman like this doofus make a living selling simple explanations to complex problems that seem logical but are often wrong. Sometimes not just wrong but maliciously wrong. Instead of helping they're just making things worse. And rags like InfoWorld are just as bad, overlooking conflicts of interest and technical correctness in their pathetic quest for pageviews. Don't give them the attention they so desperately crave otherwise you're just playing their game.