That hardly helps your case. In fact, it presents many of the same arguments which were advanced by christians in the American South before the Civil War--christians such as Leonidas Polk, the Episcopal Bishop of Louisiana.
I can't believe you posted a link to a site that more than makes the point about slavery and religion. However, i suspect that you read the line: "Slavery is thus seen as an undesirable and unnatural state of affairs."--and ignored anything which is deprecatory. That is, of course, exactly what you do when you evaluate scripture--read and believe what suits you and ignore the rest.
Most telling, however, is that you can post that and ignore the disclaimer which Wikipedia posted at the beginning of the article:
Wikipedia wrote:To meet Wikipedia's quality standards, this article or section may require cleanup.
See rationale on the talk page, or replace this tag with a more specific message. Editing help is available.
(Tagged July 2005)
Tagged means that someone knowledgable saw the extent to which it is apologetics for christianity, and deprecatory of Islam, and complained. It still has the warning posted because the article hasn't been cleaned up yet.
You just don't get it when it come to evidence--whether standards of historical proof, or standards of naturalistic proof.