Yet on the Dev'S Q&A they stated Control was only useful for reducing the appearace of Sparks (when you spam Careful and Rapid).

They also stated that Craftmanship Mag.Craftmanship is a per-recipe thing isntead of a craft as a whole.

That said, most of of the culinarian recipe i'm making are easier to complete when i'm decking Mag Craftmanship. Some are Craftmanship but most of the time succes rate takes a drop compared to Mag. Craft gear setup.

EDIT: Control on chef gear is (my hypothesis) because since we cannot do touchups, we'll be more depending on Careful synths to raise quality and attempt HQ.