If you are looking for the best ship to fight other capital ships with, you are certainly looking for the Valor.
She can fire no heavy turrets backwards*, also not at point blank downwards and upwards, has only 1700 regens**, and her top and bottom profiles are so damn big***.
Well... why is the Valor good then?
Because you would, if you stopped whining, notice that she has a forward gun. And not just a plain, sucky FG like those little gunboats and cruisers have. This one deals 650k damage to the enemy, using only 2.4mils energy, and it can hurl its giant ball of death every 10 seconds, making it the 1st gun in the game by damage per second. Furthermore, it doesn't use that little red crosshair to aim, so your enemies won't be able to escape its grudge by strafing in order to move their crosshair on all possible sides. The FG allows you to shoot where YOU think the target will be. In combination with a missile and a pulse, it allows you to pew those little, annoying Bretonian battleships from distance, far from their cerbs. You can evade mortars pretty well by strafing up-down, but a Dunkirk will always evade cerbs better than you, so don't enter a cerb battle. Rely on your mighty forward gun to annihilate them from range. Oh, and one more thing - IT'S BLUE!
* I can show you a maneuver to counter your enemies trying to stab their guns into your butt.
** You won't even need regens if you stay at range and FG them. And if they charge you, the Dunkirks, 1700 is enough. It is 6-cerbed Redemptions that you have to be afraid of. But, don't worry - most of them are utter noobs.
*** Keep bombers away from those parts by turning in turret view. You can strafe pretty well if the enemy is facing your front, or side. Or even TS.