Shes definitely not better than post XL imposter IMO, same applies to prepatch summoner and EVO bone shaper.
Tempest is kinda hard to tell, people used to think it was amazing, but after so much time playing it I think it always had weaknesses, and even if it was still +12, he'd still be kinda lackluster in certain areas.
An anti air is good to have, especially in this game, but personally I think that should be across the board for everyone.
She doesnt have what I'd call 'good' pokes in neutral, and by that, you're not going to be using her pokes to start offense, this is why B1 is so important, her pokes are good defensively. But in neutral if you can get under B1 shes gotta play alot more cautiously, so this applies to characters like Kano, Scorp, Sub, Johnny, Shinnok, Sonya, etc etc.
Her corner damage doesnt really change from her midscreen damage, unless you hit F3.
I just believe shes good because she can slow down the MKX pace, by stopping people (who by now are sooooo used to) running in and jumping everywhere. This is why people get mad.
Whats the mix up on B1? There isnt one, if B1 is staggered you have time to interupt for full combo if the opponent is taking the piss and trying to B1 or throw again. Thats on the player, not the character, same applies to Lao players doing 11212 -> D4 or throw or whatever.