right, but we speak here of ships with turrets, in other words nearly 360 degree fire arcs. flying tanks, not bricks
and rockets cost you money
still frighter are to extrem slugish, but heavy fighers highly armed are imo better than light armed more agile fighers. (alone for the simple fact that you can make with them faster money and still able to defend your self, and well all weapons have a good firearc, so the agilltiy problem is not that much, furthermore all ships can turn with engine kill within not much more than a second)
So the SL rule does not really fit for freelancer
(and btw there is no fishing in fl, so one of the advantages of the fast ships is gone)