Have people even read Mjolnir's post explaining the purpose and suggested use of each weapon?
"I have 2 battle razors and they drain my powerplant"
What the hell do you have 2 for? 1 battle razor instakills any bomber, you only need 1. It works awesomely.
"My missile won't hit bombers"
It's an anti-capital ship missile. If you hit a fighter/bomber with it, you cheated.
"My cruiser can't kill BHG dessy NPC"
Stay at 2k and snipe at them with 2 pulse cannons and a light mortar.
Stop blaming the guns, and read up on the info please. In short, RTFM.