Overall, I'd say Roxas has it the worst. From Day 1 of his life he was lied to
How exactly was he being lied to since Day 1? It's not like he actually asked "Hey, guys, who is my other?"
His life seemed pretty decent in Days actually, until towards the end. Got to go to missions, had a purpose, met people, ate ice cream every day, learned life lessons, etc. Not so bad.
He gets 2 friends, but in the end watches both of them die and forgets about one of them completely.
Lack of death in KH makes this less sad. Plus he had a true farewell to Axel, so, again, less sad.
Except not, because he didn't die in any real fashion, as Nami explains many times.
to for someone he doesn't know because it's what's "right"
He had all of Sora's memories. He probably knew Sora better than a lot of people.
All of his happiness was crushed, which wouldn't of been so bad because he's not even supposed to feel happy, but sense he was Sora's Nobody, he did have feelings, and for the same reason, he had to die.
Pretty sure he had feelings because he had someone's heart shoved in him, not because he was Sora's Nobody.
Terra had the majority of his life good, but then made the wrong choices.
As I see it, so did Roxas for the most part.
And he's probably not even aware of anything right now, so it's not as bad.
He probably is. If Roxas can be aware of stuff Sora sees, I don't see why Terra wouldn't be, even if he, like Roxas, wasn't in control of the body/person in question.
Also, he'll be saved eventually, and actually be able to live his own life, and be happy, unlike Roxas who will just regain some memories but still not have his own life which is all he wanted.
How do you know what Roxas wanted? It seems to me that Roxas' only torment was forgetting Xion. Which means, for the most part, he was A-Okay with how things turned out.