pain is subjective, while a hypersensitive person can yell and scream in agony from a skinned knee a masochist might laugh at the pain from a multiple fracture. so listing its quantity is hard if not impossible. and while all would agree that salt in a wound is more severe than the wound alone, trying to compare a broken digit to a broken leg has the difficulty of higher concentration of pain receptors in the digit while the thicker bone of the leg would require more force to break, I would be hard pressed to say it is worse than the broken finger or toe due to the increased pain and other problems (for instance, I have heard that you can walk on a led with a simple break but if both big toes are removed you need to learn how to walk again so I would assume that a broken big toe would greatly hamper the ability to walk, if it is possible at all)    