Fridge Logic: Ares was shown to clearly have the upper hand against Hippolyta, and yet after she kills their son, she defeats him with only a single punch. Diana was almost killed by a harpy, and yet manages to take much more damage from the empowered Ares without suffering any lasting injuries. The Invisible Plane came literally from out of nowhere. And finally, there was no explanation for why Diana was much stronger and more skilled than the other Amazons - the movie never explicitly says she has "the speed of Hermes", for example, or "strength drawn from Gaia herself".
The first one may be somewhat justified as Ares was BSODing right after his son died.
Being borne from clay, blood, and a lightning bolt is at least an implicit explanation for her abilities.
Also, Diana wasn't portrayed unrealistically stronger than all the other Amazons. She is implied to have repeatedly defeated Artemis, and she won the contest to send Steve back to the outside world, but I saw it more as there's always that one person who is better, and that person happened to be Diana.
Fridge Brilliance: While they were shocked when Steve said "excrement", most of the Amazons didn't react to Steve commenting on Diana's rack. Given that he had to define "crap" for Hippolyta a minute before, none of them are aware what he's talking about.
Speaking of racks...one of the main plot points of Wonder Woman is she was granted a gift by each of the Greek Gods (in some stories, only the female ones) and the gift of Venus was superhuman physical beauty. So when he says "God your daughter has an incredible rack" the more literal interpretation is she has an incredible rack BECAUSE of the gods. This also handily explains her Most Common Superpower and Boobs of Steel traits, in universe, BTW.
Comic Book Examples
Ares' plot to use Genocide and the Olympians to start World War III and kill everyone on Earth during "Rise of the Olympian" at first seems like a spectacularly stupid thing to do, given that Diana established waaaay back in the first Perez arc that doing so would end all war and cause Ares to fade away himself. And then you remember that Ares spent most of Greg Rucka's run "re-inventing himself," first as the God of Conflict (not just war), and later usurping Hades as the Lord of the Dead, and you realize that he always intended to go through with the original plan. He just wanted to get himself in a safe position first. If you rule over the dead, and everyone is dead, that's what you call job security.
When comics depict a conflict between Wonder Woman and Superman, they typically give Diana a magic weapon, since magic entirely bypasses Superman's invulnerability... except since the Silver Age and unless stripped of her powers, Wonder Woman's been a divine champion empowered by the gods and created out of clay.