I'll go with Lopez, he is not just hunger, he is really strong and can dominate who ever his opponent is. He already proved something for us and no one can ever deny that because of his record of that is undefeated. He had the IBF lightweight title and I think that he can defend that for about 6 times against his opponents because there is no other lightweight division fighter that can oust him from being a title holder.
Are you sure that there is no other lightweight that can defeat Lopez? I''ll laughed on you if Lopez will defeated by Lomachenko. It doesn't mean that Lopez will surely win because of the age gap, but it is about who is experienced and have a lot of opponent defeated. Although this isn't really happening yet, maybe he will end his undefeated career if he loses to Lomachenko.
He is relentless and can dominate his opponent with his punches, although it is very hard to determine if who's the underdog here. Maybe some people are caring about the odds but what can we do? We just need to wait for the official announcement between this fight.
In some cases, although he was defeated in a summer olympics, that doesn't matter when it comes to a real boxing match. As you can see in his highlights, his punches are quick and strong for his body composition and I can see that Lomachenko will be knocked out by Lopez. But it depends, Lomachenko is also a good fighter but he's lucky if he can stay until round 12.
His defeat in Summer Olympics proved that he can't be always strong, he has also some weaknesses that's why Lomachenko will look for it so that Lopez will lose again. It is about the preparation of the fighters and coaches, let's see what Lopez can bring to the boxing ring. I think Lopez will be the one who's getting knocked out by Lomachenko at round 5 - round 10. The stamina is also a factor here, and I know that as an experienced professional boxer, Lomachenko will do something about that.