Bob C. does sell houses. His approach is unique, due to his business background. Instead of the used car salesman technique that has been commented on in previous posts (including the current Pigpourr), he works as an advisor, a consultant. Digging into the data to understand the story behind the numbers, putting the data into an Excel spreadsheet, and sending those reports to his potential clients is a unique approach. Not too many realtors have the inclination or knowledge to do that.
As consumers become more sophisticated, his approach may well appeal to more people.