Who would win wonder woman or super girl?

Supergirl - that is Kara Zor-el died in action in about l985. The newer character is different. So the fight, or even a tactical drill- could not happen. anyhow Supergirl and Wonder Woman were allies- in early Supergirl days , Kara was made an honorary Amazon and went through all the ritual- without, bless her, changing her costume!