Do you mean in terms of durability, or hp dmg?
I just managed to realize that my particle effects were set to minimal. So they just don't show up when set at minimal.
Im very sorry, because I just found out this issue. I don't mean to copy any other issues. My bad XD.
@Avoma, my bug report was published earlier, on the 4th November, and MC -204133 is duplication, done the day after.