Well, an ego trip in this story might be about the character's pursuit of things that boost their own ego. It could be achieving certain goals just for the sake of feeling superior or getting recognition. For example, if Dexter in the story is constantly trying to outdo others in his work not for the actual value of the work but just to satisfy his ego.
It's a tough call. Vegeta has his strength and combat prowess, but Granola might have an advantage in a particular aspect. Maybe it all comes down to who makes the first decisive move or who can adapt better during the fight.
It's hard to say for sure. Both Vegeta and Jiren are incredibly powerful, but it might depend on their current states and the circumstances of the battle.
In many fanfics, it's really hard to say for sure. Android 18 has her android strength and durability. Vegeta, on the other hand, is a powerful Saiyan with his Super Saiyan forms. If the fanfic writer focuses on Android 18's infinite energy, she could potentially outlast Vegeta. But if Vegeta quickly ascends to a high - level Super Saiyan form like Super Saiyan Blue, his power could be overwhelming.