Which

Just a quick heads up I wouldn't be repeatedly asking if people are online because you can ask @Dragonfly102024 there are absolute KARENS who will spam flag you and do everything in their power to do so

Tera vs Mega is an interesting question. Tera adds a really interesting layer of complexity to battles, but in the end, Mega Evolution is just cooler.

It was meant as a joke that you're online a lot like a robot, hence AI is helping you take over. As for the topic at hand, Mega Evolution gives 100 base stat boost while also potentially changing a Pokémon's ability and/or Typing. The reason I like Tera more is because it can be used on any Pokémon(hence doesn't play favorites) and can be used to generate some unique strategies such as taking advantage of an ability or simply adding another layer by changing a Pokémon's typing(or enhancing an existing one).