When it comes to lukaku, no one can the deny the facts that he is a really good player and aslo a fair average finisher because I can't rate his finishing skills that much and besides he is this kind of one sided striker who easily gets frustrated especially when he is man marked and for me I feel he is a bit too slow, I always prefer strikers that are very versatile like the likes of aguero, squarez and lot more others.
He just needs to have the right team and good teammates, then he can show his full abilities. He is a finisher type player, he cannot run and move flexibly to pick up the ball, he has character when he is in the opponent's penalty box area, that is why he must have good teammates to be able to provide mature ball supply on the front lines.
We can see how he played with Inter Milan before they sold him to Chelsea. He is a very productive striker because he can get what he wants, and the coach can know what his strengths are. That way he could show his best abilities at that time. Meanwhile, when he left for Chelsea, at Chelsea we knew they were in an unstable situation. They are inconsistent in the game, so it makes it difficult for Lukaku to give his best for his team. But after he returned to Serie A, he slowly found his playing form again. To expect him to play like Aguero, Suarez and players who have characters like that, is very difficult, because he is clearly different.