It ca not be called outliers because it has been consistent for 10 years ago. In comics they are presented as equals when they face each other. But in terms of individual feats. AQ has better feats now in comics. In movies AQ has been getting bettrer feats than her too. And even overpowered on land in their fight during the latest DC animated film. So it has become a consistent thing. But hey, people here seem to think that it is ok for Diana to be weaker than Aquaman. That is a great position for her it seems.