Board Thread:Questions and Answers/@comment-184.88.25.24-20131112235645/@comment-5674726-20141106193240

GianG wrote: Now, I know that Morgana is younger than Arthur (by around 2 years), but the fact that Morgana battled Arthur makes me think that Arthur was embarrassed because a girl battled him (the age was irrelevant) and I thought it would have been strange that a girl battled her older "brother".

Given that the girl in question is Morgana, I could see it happening. Uther said that she fought him from the beginning after she came to live in Camelot, so she may have been the same with Arthur, refusing to let him lord it over her because he was older and the prince. I can imagine little Morgana besting Arthur, maybe a fluke victory, and then happily telling anybody who will listen about it, while he denies that it ever happened.