That's quite a stretch to think that quote represents him saying bump and run is a better overall defense than playing a majority of zone coverage. Particularly considering he's mostly played zone coverage at San Diego and here. I think he's saying it is better, but only if you have the absolute best to play it. Here, clearly man coverage isn't something you're going to have Anthony Henry play. And it's not something I'd feel comfortable having Adam Jones do at this point. Newman, sure, but he's still a bit hobbled.
Or he could have just been telling the reporter that asked the question what he wants to hear. Most people would prefer man coverage. It's more "sexy" than zone. So it could just be the generic, give 'em what they want to hear, response. Certainly actions speak louder than words, and he's always seemed to play more zone coverage.