Disney and Anime Plagiarism?

tenchiken asks: "Disney is at it again. A while ago they were accused of (ahem) lifting portions of Kimba for use in 'Lion King'. Now their newest movie, Atlantis has an amazing amount of similarity with GAINAX's classic Anime: 'Nadia, The Secret of Blue Waters'. Take a look at Ain't it Cool News's write up which has comparisons from the Anime point of view and of the Disney point of view. Details about the 'Lion King' and 'Kimba the White Lion' can be found here. Well, give Disney a little credit for The Little Mermaid and Aladdin, after all, those were original stories, right?" You know, I was looking at the ads for this movie just this week and I thought the exact same thing! While fiddling around on the web, I found this comparison, and it appears that both pages are using information from this Anime News Network feature. Check out the above links as they may put the similarities (and any differences) into better perspective. So are the creative juices running dry over there in Disneyworld? Or is this just your average case of an earlier work's influence on a new release?