Techinically it is, but it's a lot more simplistic than that. When you target a fighter, you're guns go a blasting depending on which side of the deimos the fighter is on. After that you can use the pov buttons to switch to whatever region of the deimos you desire. Which would most likely be the side of the deimos that is blasting the guns at the figter you targeted. Of course you can do all of this while in motion, but it's recommended to choose your vector, do some blasting, choose another vector, and do some more blasting. You're flying a ****ing corvette, not a fighter, so you cannot fight the same.
On another note, if the deimos didn't have slashing turrets, you could get surgical on other capships and take out various subsystems and turrets really fast if those damn beams weren't slashers. You'd be able to make your target go retarded taking out all of all of the subsystems in view before you destroy it. Also the beams are really the only weapons you have absolute control over on the deimos anyway.
EDIT:
There was also a mission around here where you could play as a leviathen. And i thought that would be fun since it would be a more complete weapons platform. Missiles and everything else it has. Plus it's smaller, and it would be fun to play as a leviathen, that'd make the cruiser line effective.