Board Thread:Lore Discussion/@comment-117.213.145.87-20140804145809

I have heard many rumours that Alduin and Akatosh are the same. It says in Skyrim trailer that Alduin will raise when "the gates of oblivion opens". Martin (someone having dragonborn blood) sacrifices himself and summons Akatosh. Is this what the trailer meant? Is Akatosh and Alduin the same? Did Martin unknowingly woke up Alduin by sacrifising dragonborn blood? 