I opened the game in a hex viewer and managed to track down weapon info, and the Needle Fork's add status has an effect rate of 10. I'm not even sure what that means, if it's a 10% chance or a number used in conjuction with Quina's stats in some equation, but 10 used in any way is pretty low.

The extra 1 or 2 increase to Spirit you can get from equipment at that point probably means jack in the long run.