Swordsman isn't the class to do crits and turtle has perfect dmg in my opinion. Are you level 70 on both? Do you even know the 1.5x attack from behind of sword? Do you even know that swordsman isn't the class to DPS that much but they instead rely on many skills they have. A sm has like 100 combos they can use, be smart and work them out!
Hes right though, but your also right that swordmen has a lot of moves in his kit, but his damage for PVE makes him not playable
especially with the prop nerfs I'll try to show a video for comparison or I'll make one maybe tomrrow