In Grand Fantasia, Armor from levels 45 to 55 are regular pvp armor, and armor from 65 to 75 are the advanced pvp armors. If you didn't notice, the level 55 armor is just an upgrade from the level 45 one; same bonuses but slightly higher. The level 65 armor actually has the higher damage output because it increases your overall dps, not just coup de grace. Though, yes your crit damage will slightly suffer, but it is clearly made up for by the 20% sword damage increase and 10% hp.

Level 44 2% evade each piece.

Str + 10 agi + 5 taking critical hit -20%.

Light +30% coupe degrace +20%.

Physical crit hitdamage +50% 30% evasion +15% when attacked.

Level 55 2% evade each piece.

Str + 15 agi +7 chance crit – 30%.

Light +50% coup de grace +30%.

Phys crit damage+75% when attacked 30% evasion + 25%.

Level 65 4% evade.

Chance crit rate - 25%.

Str + 20 agi+8.

Light resis +60 damage twin blades +20%.

Phys crit damage+40% hp+10% 35% evasion +30% when hit.