predicted grades

hey so i have to submit my applications to university in a few months and i got my predicted grades back from my subjects, which are most likely to go off to said universities. my current predicted grades are A*BB, which is great, BUT the course i desparately want to do at southampton is AAB. I know the ucas points are the same but i am terrified that they'll reject my offer due to this, and i dont think i can afford to move far away for uni, as my other backups wre reading and sussex, as i have a guaranteed spot in reading due to a scholars course i did. i feel silly for worrying about it too much but its been eating me up, especially as i feel like i could do so much better than a B in psychology. idk pls help haha

Predicted grades are just predicted grades. People may exceed a grade, get it exact, or do worse.

i get that, but don't universities want those exact grades? will i get rejected for being predicted a grade lower than expected?