I believe his point was lack of clear line of sight to his targets, meaning he has no option to use the longer range, but instead must move in order to get a shot. Its an issue I run into as well -- 72" of range sounds great, but in practice on the tables I play on its rare you can shoot something 48" away, or sometimes even 36". On the other hand, that also means you can generally get away with shorter range fire power like necrons without being over concerned about a gunline hammering you from a distance, so its not all bad.