As a scorer, Haaland is head and shoulders above everyone else now plus City are dominating and Liverpool had a very bad season so I don't think it makes sense to compare them. If next season Liverpool is normal, then perhaps Nunez will even compete with Haaland for the top 1, because despite the fantastic start and many records, Haaland scored only 6 goals more than Kane, who plays for the miserable Tottenham.
Yes, I think everyone already knows about Haaland and the quality of play he has. Nunez is a potential player for Liverpool but indeed these two players cannot be compared, and if indeed compared, Haland's performance is far above Nunez as you say. I think the end of the Premier League last season was enough to prove that Manchester City can always win full points compared to Liverpool, who appeared inconsistent and could be said to be bad. Haaland always has an important role as a goal machine in every match for Manchester City, who always dominates the win. Nunez is a potential player who has sharp performances, but he can't get anything with Liverpool, maybe because Liverpool is not the club that suits him so his performances seem inconsistent and indirectly it seems that he is having difficulty adapting to his new environment.