I always found it funny how the Diana fight is used, when it showed Superman as far superior to her. Clark was visualizing 8 foot 700 pounds beast [and throughout the fight he was hitting air], yet still:
a). manhandled her to the sun, and she was desperate to pull out the kryptonite ring
b). KOd her in a single punch [and could have killed her, but instead stood there for her to wake up]
c). broke her wrist by squeezing
It was like an adult fighting a toddler.
She needed to resort to trickery and stealth [which is easy, when your opponent thinks you're a massive, mindless beast], and had absolutely no chance straight up.