Personnaly I give the advantage to Jiren for now, he's also much more skilled and unlike Broly isn't a berserker who attack without thinking and with everything he has. Broly would certainely give him a very good fight but his lack of intelligence and skills could cost him against a foe like Moro who's very smart and cunning and who can absorb energy. Against Broly Moro would most likely take advantage of Broly's lack of intelligence and choose to use someone or something to distract the hulking Saiyan while he drains his ki instead of facing him directly.