So Lukaku scored more than Martial both seasons, that usually points towards a more prolific goalscorer.
I see you've put the minutes per goal ratio, so based on that Martial would have to have played roughly another four games in order to score the same as Lukaku, which puts them on relatively even keel in 18/19,
Whereas 17/18 paints a much better picture of Lukaku, scoring at the same rate but with more time spent on the pitch.
So yeah, where are you going with this? How is this proving your point against mine?
Martial total goals for United 73 in 229 apps, Lukaku 42 in 96 apps, a bit of difference there, heavily weighted to Lukaku, I could then take just Premiership goals into account, 51 in 149 apps for Martial, 28 in 66 for Lukaku, again much better stats for Lukaku.
So, your selective stats not only do not prove your theory, they also highlight just how selective you have been in trying to prove this. Taking everything into equation, even by Lukakus relatively lower standards at United, he has still scored at a greater rate than Martial, and yes I know you are going to come back with 'but Martial played on the wing and Lukaku didn't'.
So lets take tis season for Martial, where he has been playing as a othordox number 9, grand total of premiership goals: 0, total goals: 2.