You're not using Tormentor in PvP ... that was just an example ... right?

I've been hit with Rush of Agony from Ambush in the past, but now that you mention it, I vaguely remember there could be positional desync issues with that set. When I was hit, it was a gank while I was standing still on a flag.

One question is where and when does the pull get triggered. Worst case, the game is bugged and the pull applies at your starting location instead of your target location after having gap closed. Ambush is different in that it's a teleport. Like other gap closers it has a delay, but no travel time. This is all speculation on my part. I am not saying these things make any difference, I am only saying those are the kind of things one could look at and test. There is also the simple fact that PvPers move fast and plain positional desyncs are more common than in PvE.

many of the resource npc's have pull immunity, especially the ones that sit on the flags, so rush doesn't work on them for the pull, the damage should still apply after the delay though which is harder to see as the visual for the damage is less visible than the pull.

I use the set on my stamden alongside stampede into carve and the DSA arena weapon for some nice AoE burst, and it works fine for me, just some of the npc's (on flags mostly) and CC immune players aren't affected by the pull from it.

This is one of those things that those who simply compare the tooltips of DC and RoA (not referring to anyone in this thread, haha) don't understand - RoA is less reliable and more difficult to use (which is NOT to say that it is not a good set - it is, of course).

Likely due to de-syncs (but really, who even knows...) you will get wildly different pull radii from the set. Depending upon the whim of the server, sometimes you will get the full 10 meters but other times you will only get 5 or 6. Sometimes the enemies will be pulled in a tight stack on top of you (like DC) and sometimes they will only come to a lose stack about 2-4 meters offset from the center of the pull. It is basically RNG along several variables during any given stacking attempt.

I think that it's worth trying to get the set to work, depending upon what you're doing.

If you're wanting to use it for dungeons (which I am guessing due to also using Tormentor) then it is a nice set. And de-sync and such are less of an issue in dungeons due to the fewer number of players in the instance.

And if you happen to play Templar, you can use Explosive Charge to get an even larger taunted radius for Tormentor, it's 6 meters versus the 5 meters of Stampede.

if your using it for pve, then you also have to be aware that there are quite a few enemies which are straight up immune to cc, especially in dungeons

any of the "elite" mobs will be straight up immune to the CC

for pve a technically better pull set would probably be the vateshran 1h/shield, it has a wide area, and debuffs the mobs after the pull