Talk:Dark Soul/@comment-5647122-20161121061751/@comment-4511886-20161121111023

Well, the lore of Dark Souls at the very least heavily implies that the Furtive Pygmy nurtured and grew their Lord Soul when the other Lords used theirs to battle the dragons. It's fully possible the other Lord Souls could grow, but they didn't because the Lords simply didn't do that with them. Alternatively, the dragon war was so long that the difference in growth between the Dark Soul, which had grown since it was discovered, and the other Lord Souls was big enough to not let the latter catch up.

There's also the fact that the other Lord Souls were in some way consumed by the events of Dark Souls. The Witch of Izalith used hers to replicate the First Flame, which ended in disaster. Nito gave his soul to death, presumably weakening him in the process. Finally, Gwyn's soul was consumed by the First Flame when he linked it.