MntT77
[10] Knight
Also how can people say Leixia's mixups are bad?
Leixia's mixups aren't bad in the sense that their general properties are bad. The reason they're considered 'bad' is because they do a fair bit less damage than most characters' mixups. Sure, Leixia might with them 50% more often than anyone else, but if they only do half the damage, that still means Leixia's mixups are 'bad' comparatively.
Let's see what she can get off a simple 2K:
WR A+B(low)
WR B(Evasive)
WR A
WR K(free AA on hit and pressure on block)
6KK
66K
FC 3B
FC 3BB
And that is just scratching the surface. She has good mixups, in fact that is like her greatest strength.
2K leaves you at -2 on hit - not ideal if you want to start mix-up.
While most of those moves you listed do indeed have their uses, FC 3bB is just generally horrible. And do you want to know why? Because the instant that cute little jailbait says 'Umm...' like the perpetually innocent little flower she is, all your opponent has to do is to quickly initiate a TJ move to stuff her up. For example, Natsu can react with 9KA for over 60 damage!