Except that Miranda is superior to Tali. In just about every characteristic. Miranda never sneers at or dismisses Tali, period, so that is entirely false. If Tali perceives that, then she's way off. I'm much more inclined to go with Miranda (unconsciously) outlining Tali's own faults and issues, particularly where their father was involved.
Probably the same vibe I give off to people here as what you're describing. I'm not sneering at or dismissing people, I'm just not one to really indulge mediocrity. If you want to think its personal, then go ahead.
Again, you're way off: being in the military is where you face this attitude. Nobodies going to hold your hand, and they're going to be quick and decisive in pointing out your own shortcomings. It's nothing personal, but we see an issue, we tell you of said issue, and we expect you to nut up and correct it. Miranda is the same. If Tali can't deal with that, then it's her own problem. As well, "believing in her own hype"... what? Miranda makes it pretty clear that she doesn't do this. She's objective about it: She knows what she is and what she's capable of. It's called confidence: to people lacking it, I can see where they might think that she's egotistical, but she's really not. It'd be disingenuous of Tali to inflect a sense of snobbiness and egotism onto Miranda just because she is insecure enough to not have the same self-respect as Miranda. And Miranda makes it clear that she's still human, and that she still makes mistakes, as early as the first conversation with her on the Normandy. She's objective with her capabilities and talents. She knows she's far more capable than most people even think about being, but she still knows that errors and mistakes happen. Sure, she prides herself on not making mistakes, partly out of not wanting to harm her own pride, but also because she recognizes the consequences that might arise when someone in her position makes a mistake.
It's not that Tali lacks an experience with BS, it's that she lacks enough self-confidence and security to not feel pressured or victimized when brought close to someone who has plenty of self-confidence and security. Jack meanwhile is has a highly impulsive and nigh-narcissistic (and borderline psychotic) character, and this is only exacerbated when in the presence of Cerberus personnel, particularly Miranda, who as the highest ranking full member of Cerberus on board, is the face of everything Jack hates about Cerberus.
And if you're going to resort to more sexist language and degradations of both Miranda and other male characters (as well as what I suspect to be towards male players themselves), then you're just digging a hole I'd rather leave unbroken. That's not really fair to anyone involved really.