To me, it seems like if they think Google has just not delivered or dropped the ball or something regarding search, then Bing really fails to deliver. I have a hard time calling it better than Google and a really really hard time seeing it being better enough to switch. It just doesn't do that much more.
If they're doing search, then the clearly need to do it better right? Not simply as good. Is it just arroagance that they can deliver some that merely matches or approaches Google and expect to eventually win? What makes them think that? It doesn't appear to be supported by any facts.