Adcth is counted from the whole damage output of a skill, not just from the weapon damage portion. But the percentage of the weapon damage portion affects the percentage of global adtch applied, scaling up to 100%. So:
If you got global 20% adcth (as reads in the second page of char sheet - with an offhand it doesn’t matter which hand, they both add to global):
10% wpn damage on a skill = 2% adcth to that skill
50% wpn damage on a skill = 10% adcth to that skill
100% wpn damage on a skill = 20% adcth to that skill
100000000% wpn damage on a skil = 20% adcth to that skill
I play both and I like both. In general, the Magehunter is a bit easier to play and more forgiving towards piloting errors. It’s also a bit tankier.
AAR Binder means more raw damage, but you need to time Mark of Torment and Mirror properly to survive against harder enemies. AAR also got hit by a slight nerf with the last patch. Still going strong though.
In short: Personal decision - play what you like best.
Im worried about the nerf as someone else mentioned that it lost about 1/3 of damage? are there any other caster builds with Arcanist which match the AAR builds here and can clear all really high level content?
Depends on the build I’d say. To give you an example: RomanN1has probably the fastest AAR build. And after some adjustments it can still clear crucible in record times.
OFC it’s a super offensive build, which requires extremely good piloting. I freely admit I can’t play it. But in the hands of a top player, this is still incredibly strong. So AAR definitely isn’t #deadbuild.
Fastest AAR is with Fleshwarped Tome but not having disrupt res from Codex of Lies is a steep price to pay.
Roman’s Ratosh binder has amazing sustain at the cost of more Mirror-MoT. But I guess most binders now - both classic aether or aether/vit - will choose Harbinger of Death over Reckless Power, at least those who wanna stick to the severely nerfed conduit.
But even that can be made less suicidal in 2 minutes. Tone down on spirit dump, get Ravager Eye on one weapon or both, get Seal of Blades or Haunted Steel, etc,