Nothing in this game actually handles like a fighter.
Because this game (i.e. ED) doesn't have atmospheric fighters. It doesn't have atmospheres in those places where you can fly. In most of the places you will likely be fighting, it doesn't even have any appreciable gravity.
Put your fighter into space, and even if it could provide thrust (through some magic in the engines), your pitiful thrust vectoring won't even let you land at a station, quite apart from letting you fly around one.
EDs flight model is a compromise between physical and gameplay - and as a compromise, it means that neither party is happy with it. The art of a compromise isn't making everyone happy - it is to make everybody equally unhappy

. A realistic flight model would make this game rather boring in terms of space combat - try Kerbal for that.
Instead, you get
- top speed locked to a local inertial frame
- local inertial frame switches apruptly (clearly visible when you approach a station or RES in SC)
- speed limit is way below what would be neccessary for real orbital mechanics
A realistic simulation would be extremely boring - EDs universe does not have antigravity, so in order to accelerate from a ground port to orbital velocity at human reasonable acceleration (and I'm not even talking passenger missions here...) would take you something like 3 to 5 minutes (on a 1 g world). Just to get into a stable orbit.