Let me put this in perspective.
Drogba, while not consistently prolific, nor particularly skilful, was a superhero-type character, being one of the greatest big game players there has ever been. Some players have an aura of legend about them, Drogba demonstrating this none more so than in the champs league final, scoring the 88th minute equaliser and then as luck (or as legend) would have it, being in a position to score the winning penalty. Add that to the fact that in the trophy run, he had given away penalties to arguably the best two sides in the world, one taken by arguably the greatest player the world has ever seen, yet somehow both penalties were fluffed, and you begin to draw the inescapable conclusion that our European win was not only written for us, but preordained for him.
Not to mention his many other critical contributions in key games, fate smiles upon, and history revolves around, individuals like Drogba.
It is still way too early to tell if Lukaku is similarly guided by destiny. I would happily accept 25 goals a season for the next 5, but that does not imply Lukaku will be able to forge a legend as great as Drogba's. Time will tell.