The comparisons have been made numerous times both bad and good. Now an article has been released that says to prove Lady Gaga wanted to destroy Madonna. They quote several employees who worked with Gaga on ArtPop but have been recently fired. Gaga was quoted saying "She can't sing and is an average dancer at best."
According to the sources her plan was to recreate Madonna's career piece by piece starting in 2008 even studying a book about Madonna. Sounds obsessed to me! The article is a pretty interesting read. Check out Full Article HERE