[Aule]

I don't think that Feanor was greater than Aule as he was Valar. Therefore he would have all the knowledge from Eru's mind concerning the materials of ME.
But certainly Feanor was the greatest in skill of all the children of Illuvatar and his adopted children.

Although the Dwarves i think were stil better craftsmen than any of the Noldor (except Feanor of course)as they were the children of Aule and would therefore have been taught as much of the knowledge that he was allowed to give.

If the Elves were the greatest of the Children of Illuvatar, what were men better than Elves at. As far as i know, the only thing that Men had that Elves didn't was their ability to control their own fate and not Tarry in the Halls of Mandos but escape beyond the world. Is there anything that Men especially the Numenorians that non of the Elves could beat them at.
It can't be sailing surely as the Teleri would beat them. Crafting = Noldor beat them
Wisdom & Song = Vanyar