He also beats him regularly too. You have to acknowledge that it's long established and said by marvel that Thor always holds back on earth and against humans. Because he has smashed planets in one strike before. Officially he crushed a sun off panel with brute strength. In Thor and Hulk's most recent encounter, Thor, who has been written as more impatient and ruthless these days, was angered and knocked out and nearly killed the Hulk with one strike. Stan Lee the creator of both characters also said that Thor is stronger than the Hulk. You can't always take low end feats. Characters are usually judged by their greatest feats unless it's clearly PIS. Otherwise, Thor just needs a rock to hurt Goku.