Annie vs Carrie
In a battle of psychic powers, I believe Annie would crush Carrie.
sharePersonally I think Carrie would probably win, she has a lot more pain and anger to use. Although I doubt they would fight, they would probably be like best friends :P
shareIf Carrie did have enough strength to beat Annie whether it was based on pain and anger or not, she would've take her mom out on day one, as soon as she discovered she had special powers.
shareCarrie can stop someone's heart.
I've never seen Annie shown that sort of precision and skill with her powers.
Plus Carrie did things reflexively, almost instinctively, so I'd say she's got the faster reflexes as well. In a fight, a bloodlusted Carrie would just think "Heart Stop" or "Brain Explode" or "Neck snap", and it'll be over in a second.