LinkSpecialist, I think it's the other way around actually. From a different perspective, The spin attack is more defensive and the clawshot is offensive.
While I'm off the stage and I see a Dedede attempting to bair me, a Metaknight trying to dair me, or another link using his nair, I'm going to use my UpB because using it will give me some protection against these attacks. Of course a boomerang and bomb will be thrown before using the UpB, and that's all part of a defensive recovery in my opinion.
When I use my clawshot to recover and grab the edge, I'm doing so when there's no one jumping off the stage to edgeguard me. You can still throw projectiles to divert the opponent, but overall I think the clawshot is a faster but less protected way to reach the stage. I use the clawshot for mindgames, as a fast recovery from the edge to keep my speed up, and to keep my opponent guessing. But I know one defensive purpose of the clawshot is its edgehogging abilities. ;]
Anyways, off to work. BYE :D