The exact properties of the explosion will vary even if you use the same pod too. Is the pod a sphere? Chances are, no, it's a cylinder or some other object. Is the shot dead on or off to the side? That depends on your gunner, and that's one shot you just need to knick it to set it off, so precise gunnery isn't needed. Is there a traditional explosive surrounding the anti-matter on a timer? If so, is it synchronous or just there to go boom? There are tons of variables that can make the explosion more or less power and even alter the way the pressure expands. Explosions aren't perfect spheres, especially if the explosive isn't packed uniformly or in a sphere, so that can have a huge impact.Enigma wrote:Even if you detonate an antimatter pod, not all of the antimatter will explode at the same time. Chance are a good chunk would be pushed away from the blast.
Also, the power dissipates by the inverse of the radius squared, meaning that doubling the distance between the enemy and the pod decreases the power against that same enemy by a factor of four. Sure, close by there's almost nothing that can withstand it, but if you move far enough away, the explosion will just fizzle against your shields.