He's never had a partner all the way though his career for both club and country? Would you prefer a big lump like Rondon?
Lukaku is a fantastic striker.
However, to say he plays the role of a lone striker (i.e. drops deep to link the play, holds the ball up, makes runs to wide areas of the pitch etc) better than anyone in the league is ridiculous mate.
Lukaku was great for us. Not disputing that. But at times - especially against the best sides - we played without any outball or anybody to stretch the game, because Rom just wouldn't do it.
As you said yourself, he's a poacher. He's built like Drogba, but plays nothing like him. He's at his best on the shoulder of the last man, using his pace and power to get through on goal.
Giroud, Morata, Firmino (even though he plays in a three as a false 9, he'd probably be better), Rondon, Tosun etc probably all play the lone striker role better (that's off the top of my head) in regards to those factors I label above.
However, without a doubt Lukaku is a better striker than all of them when it comes to goalscoring and getting in the right positions. I'm not disputing that.