Dexless DW vs. dexless NW

Let me finish that sentence.

Most of us are saying that Night Walkers have survivability issues due to their low HP, so bossing with them is not as easy. Meaning they suck.

What everyone generally means is "most bosses kill nightwalkers in one shot, meaning no amount of survivability or 'skill' will save them. Other bosses (like pap) can cause a lot of cheap/annoying deaths, so maybe it looks like they require more skill, until you lag a little or get stunned at the wrong time (mostly unavoidable) and die. They don't suck, they're just extremely disadvantaged.