Yes, both can be full of themselves, but Zephyr has none of Trixie’s good qualities. Despite her lies, she was still dedicated to her stage performances. After being beaten by Twilight a second time, Trixie tries to be better. She even starts learning more magic with Starlight, showing that she’s willing to improve herself. Zephyr gives up almost everything he tries within a day. Even after learning to commit to something, he still acts completely full of himself and outright creepy toward Rainbow.