I have heard over the years some aikidoka state that "aiki" weapons techniques and principles are "different" than koryu arts.
I disagree, principles of efficient movement are universal. Strategy and movtive or intent are other subjects. I think the principle of the technique is the same, form may vary depending on the person, and style surely differs from person to person.
Do we practice the sword that takes life or the sword that gives life? There's lots of room for semantics and hair-splitting there. I suspect the easiest way that I can express it is: principle is the same, technique should be able to be successful at whatever level of force is deemed necessary by the budoka. Make successful technique and do as little harm as possible.
Kano Jigoro's maxims: Seiryoku Zenyo and Jita Kyoei (Best use of energy and mutual benefit) conveys this attitude well, I think.