This one, I've heard soooo many rumors about it. Only a few make sense.
1. I heard Glacier Resist helps avoid it, which kinda makes sense as ur slowed when it succeeds.
I dont really believe this one.
2. I've heard Legcut is a Curse similar to Scream, which also makes sense as rogues usually have alot of CR (ROLS + PP's offer high CR)
This one makes the most sence to me, as it's the only element on the 6 showing that I've never seen anywhere else, Magic Resistance helps with Spectres AOE, and the others are self explainitory, so Curse is a likely answer.
3. I've heard Dodge Rate / Dex helps to avoid (as well as succeed on a warrior). Causes the skill to "miss" therefor not slow?
Not really sure, but I tried a high Dex build warrior in DCZ, used Lugias, Fov +1's etc. Cant say for sure that the legcut success rate was higher, but i Legcut MrX1X about 8 out of 10 times in arena while he was lightfeeting, so who's to say?