Because the guy is always slinging BS. He told me last night that a 53-39 chainring combo wasn't possible. The other guys at the shop refer to him as the one who never shuts up. More importantly, those times would make him one of the top runners in North America. If that were the case he wouldn't be broke, working part-time at a shop. Believe me if you met the guy, you'd smell it a mile away.