Originally Posted by
Powerboy
I would add that she had already been severally weakened by that substance that was her kryptonite, by the minds she had absorbed being ripped away from her and by rapid changes back and forth to and from Ben as her moment of transcendence or whatever approached. Even after all that, she survived the wrecking ball though it severally hurt her. But, in my opinion, nothing from that final fight is relevant because it was made abundantly clear she was working on a vastly reduced level of power.
When Glory was introduced and I saw how powerful she was, the first thing I thought was, "I wonder how they're going to weaken her by the finale so Buffy can beat her?"