The guy's an idiot. He complains that you can't have chases in D&D because there aren't rules for sprinting in D&D and everyone moves 30 feet a round, but in 3e at least there are rules for running. He's also assuming that all chases will happen on a flat, featureless surface, which would only happen if you have a really bad DM. A good DM would make it interesting with things like ledges to climb, boards to balance over, and gaps to jump, where failing a skill check could slow someone down and make him fall. And there are other ways for players and opponents to speed up or slow down: transmutation spells, control spells, teleports, items like caltrops and tanglefoot bags, and many more. Instead he's just gonna ignore all that, because his rant wouldn't work if he didn't.