P.atk don't afect glad skills in essence, +7 C dual make more dmg than B dual, just because SS dmg bonus. War Cry give more 25% p.atk but don't increase glad skill dmg because skills have fixed power, war cry only work on one skill that add power to p.atk.
Double sonic slash is the only skill that say "Added to P. Atk" but it deals same dmg than Triple Sonic Slash when both have the same attack power. (My lvl is 55) So, i think the mistake are descriptions. Now the discussion is, what is better in late game? Double Sonic Slash with less power but ctr chance? Or Triple Sonic Slash without ctr chance? In my opinion, skills without ctr chance are bulls.hit in l2. In this game crt power is op. So... duelist now are the worse melee dps class in the game because his best skill has no ctr chance.
This doesn't make any sense. If one day Glads were to be OP, they should balance it not make it useless... Sonic Blaster has 20 Sec CD, skills other than double sonic slash do not scale with p.atk So yeah, Gladiators need some love from the balance team, if there is one out there.