Well Syren buddy like I said in post, SM is way better than fighter since it really does not need to focus pure on luck as fighter.
Still there are some fighters that used full con + props and done far better than dex fighters, adriano is the one.
My point is, SM with high CD can spam KD's on classes it can't take out easy and attack from back with glaring slash increase dmg.
Another thing is, that if those tankers use mudosa accessory that avoid KD but giving away props is again game of luck.
Unlike vs fighters where you need to wear at start anti confuse neck of 50% or resistance for stuns that don't happen much and have anti confuse ring or rings in check for thunder, for SM you need more gears, from avoid KD then resistance and then full %LP in case you want to last longer and hope for fail or if you would wear reflect gear in hope for SM to die due reflect, that is it can't be killed now soo, SM will KD you around even with 1 HP left, unless they have potions, auto pot or senzu.
Like I said, SM is way better than fighter, plus they do have high focus soo 90% time unlike vs fighter, their stuns will stun.