Well, you're using Lukaku 2021 in a farmers league to compare to Tosun in the Premier League.
Well, Tosun just scored two in his first game back in the Turkish farmers league, in 30 minutes. Which by your logic makes him automatically a better striker than Aubameyang.
As said in the initial post, it's comparing apples and oranges. There's nothing to suggest Lukaku is a better footballer than Tosun - there's plenty to suggest he's a better goalscorer, but that wasn't the question. You can be an elite level one trick pony, and that's what Lukaku is.