Originally Posted by Mr. Green
Tales of Asgard is not the same thing as Son of Asgard.
They're very similar. Tales of Asgard features tales of various characters from throughout Asgard's history, including Thor and the rest of the current series' main characters in their younger years. Son of Asgard just stripped away the other stuff and focused solely on them. So it's like a more focused subset of Tales of Asgard.