Clearly it was implying hollow infusion because luck, it literally says "Blessed Weapon". The meaning is that once you have raised the weapon paste a certain AR threshold the percentage increase from Blessed Weapon outperforms other buffs such as Lightning Blade. You are right though, what the note says is complete nonsense bordering on incredibly stupid. If you go 60/60/60 with hollow presumably then you will get less AR then going 85dex / 35str with sharp. That is right, by going luck you are wasting 60 stat points for item find on something that is not meant for it. The point made about Blessed Weapon being stronger is true for any weapon once you get their AR high enough. Furthermore, their charged hits gain a greater benefit allowing for some really huge potential damage.