Leg swelling is a sign of fluid buildup or inflammation of the tissues or joints of the leg. Swelling can occur anywhere along the leg, including the thighs, knees, calves, ankles and feet. Mild swelling is a common occurrence after standing for a long time, especially in warm weather.
Wonder Woman's is One of the Strongest Heroes. Wonder Woman is stronger than Supergirl because her strength derives from the Earth itself for she is a child of Gaea. While Wonder Woman isn't as strong as Superman she could still hold her own against Superman.
Both are very mighty super heroines with identical powers and abilities. Wonder Woman is an Amazon princess granted with superpowers by the Greek gods. Supergirl is a super powered Kryptonian who is the cousin of Superman. Diana has certain advantages over Supergirl but Kara has her own leverage too.