Before the restart and Kanes injury, he had 17 goals in 25 games. Martial was on 16 in 35 games. Since the restart, Kanes got 4 in 7 games, Martials on 6 in 7 games. So even if you look at the whole of the season, Kanes stats were a lot better and only marginally less now. Not looked at Aubama's numbers but wouldn't be far off either.
Saying that though, im not disagreeing that Martial should be our top striker next year. The money it would cost to bring in Kane for not a huge improvement, plus Kane's older, so it wouldn't make sense.
In regards to the 'Martials first season as a striker' point. It still doesn't take away from the fact Kane and Auba have don't it for many season. Martial COULD go on to do the same but the other two have done it and are proven. I understand we should support our players but If Spurs offered a straight swap this summer with Kane/Martial, you're telling me you wouldn't take it?