Something that has become a popular thing to do in recent games I've played is using proton torpedos against enemy fighters in fighter to fighter combat, because they are pretty much a guaranteed one shot kill, and it's not all that difficult to score a hit since all combat difficulty is calculated by ship size, not by weapon type. The 750 credit cost of torpedos is easy to justify when you consider a single point of hull damage that couldn't be fixed by your mechanics check is supposed to cost in the neighborhood of 2000 credits to patch up, and if you take down an enemy ship worth 100k credits in one shot that's a bargain.
I feel like this is kind of a flaw in the system. Am I overlooking something in the rules that speaks against using capital ship busters against fighters for convenient one shot kills? Do I just need to replace all TIE fighters with TIE bombers in fighter battles because they are actually much scarier when everyone just fires torpedoes?