The Prowler is the fastest tank in the game, but what is the point of speed when you can not utilize it? Shooting while moving and hiting something is nearly imposible. Every bulp and rock causes the canons to jump. So we need stabilizers. And even if you hit, to get maximum damage on your target, you also have hit with the second canon, and this is nearly impossible, because of recoil, movement and not having stabilizers. So the prowler is inefficient, his "advantage" of speed is rendered useless by this. Also two canons are complete nonsense on a speedy tank. You simply can not hit while moving with two canons, even with stabilizers.