Remember this is all based on intensive offline play. I think online, FA is pretty good. I'm telling you this based on 4 months of solid research; play anyone who genuinely knows the match-up (not just a good player, a player that genuinely knows the match-up) and it will change your opinion immediately. FA categorically has no place in high level MKX and can at best work against an intermediate level player.
Low rocket is 100% jumpable on reaction for a full punish. Not sometimes; 100% of the time. It has no use whatsoever in the neutral against any player who knows the match-up because it will never be blocked there.
Up-rocket being +11 is useless because she has nothing to jail you standing with. It's not even a discussion point - the few things that actually force an exUp Rocket block lose to almost every D3 in the game or don't combo on hit.
That said, her corner game is good, just not sustainable. Guess right, great damage, guess wrong and it's your opponents turn.
SG is legit though and totally viable.
@Phosferrax - agreed, FA has to be played quite dynamically and is strongest up-close (because she does no damage at any other range unless the guy is a totally idiot and jumps).
Also, I hereby put out an open challenge to any FA Jacqui players to play me offline against my SG...the sooner I can dispel the myth, the sooner we can get her where she needs to be.