I think he is saying that Mike, and if you think about it, it's hard to argue.
It seems to me that as much as our nation says otherwise, they will not actually elect an "outsider" or a non-politician. As much as we "hate politicians", the non-politician stands almost no chance of actually winning a major office. In this country, we find charisma to be an extremely desirable and electable trait. That, along with the ability to handle the media with smoothness. I was not a fan of Clinton, but that guy could sell you used wallpaper. And he turned out to be reasonably okay president - especially compared with what we have now. Reagan had the ability to deal with mistakes cleanly also. We tend to elect one because we can't stand the other guy.
I think you'd find people like Abraham Lincoln and James Madison unelectable in today's age. Our society, led by the media (to varying degrees against both major parties), tend to run with sound bites, appearances, attractiveness, etc., and not the total package of the candidates. Although I never worked in the media myself, my father did for 40 years, on the newspaper side, so I've seen it up close. They not only have an agenda, but they actually do push it - even to point of forcing stories to be written from their perspective.
When it comes to Bachmann, I think she's more polished than Palin, but I don't see her as a candidate who can win - as much as I believe in the same principles.
The bottom line to me is that we need someone who can take on the current president head on and stand toe to toe in a debate or media setting. I think Chris Christie or Rick Perry can do that - Romney to a lesser extent. I think Cain can hang in there on domestic issues, but he would need a lot of help on foreign policy (but then again that didn't seem to matter with Obama). Most of the rest of the field, while they might share my views, seem to be too 'nice' to really win a fight against a polished politician with the media squarely on his side.