Haaland is clearly the best goal scorer in World football right now.
For years we used to see Sergio top of those per-minute goal scoring charts, but Haaland has absolutely blown him away so far.
However, we scored more league goals in 4 of the 5 seasons prior to Haaland's debut, and right now I believe he's a drag on the team in a way that Sergio never was. Still, he's the only player in World football that is good enough to be worth the impact he has on the team's overall play, and I do love that we get to see Pep have to work to change all his systems to accommodate someone who is so un-Pep like.
We're really lucky to have had both. If I had to choose, I loved Sergio more, but then Haaland is someone who appears incredibly determined, and I suspect he will become a much more interesting player in the next few years. Just as Pep has to change to accommodate him, I can see him changing, and only getting better.