Evidently the whole idea of the vet. trooper was oriented around the BS and the associated access to weaponry, the real value of vets lies in paying for themselves at range i.e. a vet squad of 100pts knocking out a rhino and 6 marines (+ special weapons) of 130 pts or so. For the marine player, this is quite painful and will often make him think twice about charging vehicles with low armour their way. A DE troop squad may match a SM in CC with init and WS, but it will likely come under fire before getting there, and when it does, the higher T and S of the SM along with their use of power weapons or the "and they shall know no fear" rule tends to weigh down heavily on DE squads. It's the matter of distances, either range and BS of the firing troops(IG) or the movement and WS of the transported troops (DE).A basic DE warrior may cost 8 points like the Veteran...but think about this. Veterans can get a Heavy Weapon team, up to three special weapons, plus they are Infiltrators. I honestly think that makes up for their lack of WS and Initiative.