To start I would like to say that to be a chef you really need to do tasty and creative stuff. A salad/sprout bar isnt a place for a "chef"

.Some of the nicest things a chef can make are totaly unhealthy.
Well its gonna sound mean at first but listen to the explanation.
Man are the better chef period. At this point in time it would be like saying that a man is more flexible then a woman. It actualy happen but is quite rare.
My reasoning ?
Who was the butcher even back in stone age ?
Who had to work so much in their lives as cook for kings, bar, hotels, etc... It was all man. Usualy the womans were given the servant side of the jobs and not the actual preparing!
We had a lot more of "professional practice" over history to cook tasty food. Womans actualy tended to make more healthy mixes because they cooked/cared for their childrens and husband. They had to keep them healthy.
So to finish I would simply say...
When you think of a dream plate of calories and fun... What do you ppl imagine ? Restaurants or not! Yeah, a man
When you think of that not so tasty but VERY healthy veggy soup.. You think of ? Yeah, thats right a woman
But honestly I think a balance of both would be even better for our lifestyle