In Arena: no doubt that JTR is better on Defence cause you can mix and match the Team and still hold your place as long as you have her with zBB-8 and zzR2D2
Heroic Rancor: they can clear the whole thing but nowadays the Rancor is a non issue anyway.
Normal Tank: really good phases 2,3 & 4
HAAT: unfortunately I’m gonna need your guy’s help on this one. I have a top tier lineup of toons but I am not in a top tier Guild so I cant accurately test this out for you guy’s. But I’m confident its better, between JTR and Poe reducing turn meter it should be enough to get thru phase 3 and with zFinn’s cooldown reduction you will get Illuminated destiny off way faster.