What's is the point of certain weapons in SE:IV?

[Fyron]

I disagree. Torpedos are pretty much worthless. The best torpedo has a damage ratio of 1.25 at range 6. So does APB X, which also does more damage at lower ranges and has 1 greater range, all while being far more flexible with fire rate 1. Even down to APB VII is fairly comparable to the best torpedo. The same level of torpedo, the Quantum Torpedo II, has damage ratio less than 1 at all ranges... Torpedos are also roughly twice as expensive per kiloton compared to APB.