Pimping winning percentage is just part of the sports tout mantra...if you listen to sports talk radio, there will inevitably be a spot for some kind of tout. Hell, in the Bay Area, they pay for actual airtime in a show, and they always say something like "...65% documented winners..." or some ****.
Makes you wonder how much a competent one can really make, which is scary and sad.
ETA: As recently as a couple of years ago,
this guy was buying segments on two shows on KNBR, which is a 50,000W station that is the flagship for both the Giants and 49ers.