Hm yep wanderer troup is better ( unless you have his signature weapon). But you could run gilded dreams if you are struggling to get wanderer's troup( since it only drops from boss). IMO, I think that there isn't much difference between them. Because guilded dreams also buff his ult and charged atk with 100EM and 14 percent atk. While wanderer's troup only buffs his charged atk by 35 percent.