That's self explanatory why a Prowler has usually higher vehicle KPU compared to the Vanguard - it does more damage. You can't always compare numbers. You should also think outside the box. BTW about those new tank additions, you know how useful 'Rampart Projector' is? Nobody uses and it is advised to never purchase it. You double your hitbox, glow bright red, couldn't make it easier to hit/notice you. Prowlers deploy doesn't always work, so you're playing with luck if you want to use it in front-line combat.