Better at what? At keeping play similar? We are comparing someone who has been among the top few elite strikers in Europe for a season and a half, with someone who has impressed in a handful of games versus cherry-picked weaker competition.Hudson-Odoi would do better covering for Salah than anyone else currently in our side. Hudson-Odoi, Firmino, Mane would be better than Mane, Jovic, Firmino.
Not that Hudson-Odoi isn't going to become a great player in the future but Chelsea is going to prefer to sell abroad and he still has lots to learn about playing against better competition. For example, as the only top team he has played against, we were able to nullify his game simply by giving him less space.
Frankly, if either or both were available then we should do all we can do to get them. But I think Jovic will be off to Real Madrid / Barcelona while Hudson-Odoi will be sold outside England.