You can't just compare a job that has unlimited resources to a job that drains TP like crazy if you dont get procs
Thats ridiculous if anything.
Black mage can afford casting an extra fire 1 because if the fight is long the will never run out of mana
As a machinist you want to use 1 in your 1-2-3 combo as little as possible, because it drains your tp soo much when you don't get procs