Did you ever find out what this comment meant?
Nope, the guy I was talking to just insisted there was some inherent difference between the quality of the Walmart KM2's and the ones that they sell. I think they're full of crap, I can't find any mention of that anywhere online. I'm not sure if they just didn't want to honor the sale price on the tires, or what. I plan on writing an email to someone in management about my experience. Tirebuyer shipped my pair of KM2's yesterday (the day I placed the order).