Title attribute in text links

Ok another SEO test is in the books, does it prove anything? You decide. I am testing the title="" attribute as it applies to text links. (For any unnaware this causes a dropdown text box utilized by some visually impared software aids. Many SEO's use this technique regularly so I decided to test it in what I refer to as the "Articese test" Our new SEO copywriter will be rolling her eyes at me on this one. Anyways, the results of the test were, the pages that contained the kw in "just" the attribute do not get listed in google, although i know the pages have been spidered. Conclusion, they arent a ranking factor. Thoughts?