Thena was able to tank multiple punches from Ikaris and last impressively against him while wonder woman was sent to the ground with a headbutt and was unable to restrain superman even with the Laso of truth.
Thena is faster, more agile, smart, skilled, more durable, and a no-nonsense fighter. She is fast enough to react to Makkari who moves around the world in very few seconds.
shown by the Eternals (although they really had only 1 power vs. several in the comics) Ikaris was nowhere on the same level as Superman, particularly not the one from Justice League.
So, this means that your comparison between the two fights does not really hold.
I also think that the Wonder Woman from WW 1984 was a lot weaker than the previous incarnations (which is the reason that I stated that film).