Cough cough really cheap.
X-Wing squadron cost you almost half a price of corvette. And corvette can take out much faster more tie squadrons and bombers than two x-wing squadrons.
No really the poster has the point. Fighters are completly useless. They are there just for candy purpose and first minutes of skirmish when you have to rush mines and build pads.
If you ask me Tartan and Corvette should not be in the game at all. Or if they decided to have them anyway then dammage against fighters should have been minimal.
In Movies we saw the corvette only once in Episode IV and Tartan is pure product of X-wing vs Tie Fighter.
EaW: Total Realism
TR mod team status: TR Advisor, programmer, map maker, Multimedia developer