Importance for all Classes (Grinding)

1) Control
2) Craftsmanship
3) Magic Craftsmanship

Without Control, you may progress quicker, but you are more often going to go unstable and then lose 30+ durability quickly if your Control is too low. Craftsmanship is what helps the progress move along quicker, too low of craftsmanship causes you not to get as many "Success 20%" but more "Success 11-13%". Magic Craftsmanship is for HQing products, the higher your Magic Craftsmanship the more "Quality" you gain per success. But remember, without Control & Craftsmanship, Magic Craftsmanship is a waste. Because unstables will quickly halve your quality on a Chaotic Explosion.

I don't think certain recipes are any easier with higher magic craftsmanship vs craftsmanship. I have done a lot of crafting and almost every crafting class is Rank 40 or above. I hope this information helps.