This is the kind of question that you should be able to look at one of your parses and deduce for yourself pretty plainly. Even target dummy testing would be good enough to vet this question.
Kinda new hunter here, a quick question to everyone here. Is it worth using multi-shot on 2 targets? Does one multi-shot on two targets do more damage than two arcane shots or maybe even an explosive shot? Would mainly like to know so I know if I should cleave like this on blackhorn =)