I think you need to take analysis like this with a grain of salt. As they even say at the end of the article, they're still nearly half a year from voting, and a lot can change. Herman Cain was doing well before the actual primaries started, too. Michelle Bachmann won that straw poll they like to talk about. The fact is, though, you can't really take anything going on with the primaries right now as indicative of who'll be winning when it draws near to voting time.
I think it's likely in a few more months time you'll start to see more career politicians gaining steam and actually rising in polls and favorability, as the less experienced have to start facing questions on concrete policy. There's just a feel I have that a lot of the perception of disruption is hopeful thinking.