To second everyone, they’re different tools. Fusion360 sketches are fantastic for engineering modeling, which includes parametric modeling which is very powerful. For example, you can make all of the ‘notches’ scaled to the thickness of the material minus kerf, and by typing in a new thickness your notches will all scale to fit. And you can set up constraints, like an angle being 90 degrees, or a line being tangent to two circles, and when you move things, it conforms to all of the constraints automatically. Fantastic for tweaking designs.
InkScape and Illustrator are easier for certain kinds of drawing, allow coloring different elements (e.g. to differentiate between cuts and scores) and for mixing bitmaps into vector designs.
So I often design in Fusion360, then export the vectors, load into Illustrator, set colors to group operations, and mix in engraves (text and bitmaps).