I agree with your views on comparing Osimhen with Lukaku, two very different players in regard to their age and development. It's fair to say that Osimhen brings a lot of potential for future growth and performance. Each player indeed has their own unique strengths and weaknesses, and their value to a team cannot be simply compared.
Players who have potential when they are in a team will certainly be the difference with other players because players who have potential in every match will be key players for their colleagues even though the coach must care about all players in every line in order to continue to improve the strength of his own team. This season Napoli has again shown its ability through existing players including Lukaku in it, but Napoli still has to be more consistent and Lukaku also still has to work better during this season, as well as Osimhen in other leagues.
Isn't Osimhen already at Galatasaray at the moment, no need to remember him anymore, he has developed well in the Turkish league today, it is very good for his development because Napoli I think took the wrong action, sorry not a mistake but it was not right.
Lukaku is good enough and can still produce goals for Napoli, I think he is also good enough to be at Napoli although if compared it is difficult to equalize which one is better because it depends on how our object thinks about Napoli or the players themselves, but overall this is a decision that is considered good by the Napoli football team itself.