If they had fought today, not only Hrgovic, even Dorticos will KO him. He is young and might improve damn a lot quickly. Power, reach, height he really does have enough for modern HW. Predictable and too linear, today will not beat nor CW nor HW top 10 boxers. He will get KOed if he will fight vs them like he did vs Zutis for example, God Help Him. If he will improve then might be very good after 1.5-2-3 years. Will see, he is not old for HW beginner pro boxer.
I prefer Jalolov's style, he moves better, he's got that wicked left hand but he's so unproven. Winning Olympic gold and all is nice but I really don't think he had much competition. I think Hrgovic if faced with the same comp would of probably won gold too. Hrgovic has beaten better competition as a pro and he has that big right hand which is the weapon you want vs a southpaw. So right now logically you have to go with Hrgovic. But Jalolov is definitely a talent to watch, his combinations of size and athleticism isn't something you see all that often and he might one day prove to be the better of the two but right now Hrgovic probably stops him.