The sword smites evil because that's what the sword does, it has nothing to do with a weakness on Ganondorf's part.
mariofacepalm
If I created an 'out' how come you're the one refusing the challenge, tardwad? That's kind of condtradictory.
Durability doesn't help when your chest already has a hole in it. Ganon had a hole in his chest and it was no problem the entire game because Ganon cannot die unless the ToP is overcome. The Master Sword went right back into the same wound he'd had the entire time, and he died because the master sword actually can magically overcome the ToP. Nothing less will do it.