An aviation degree will put you further to the front of the queue.
Can't speak for Cathay, but for any airline in Australia - no,
it will not. An aviation degree in itself proves little. You need to get through the S&P (if applicable), the interview and the sim before your aviation degree will help you.
If it came down to the wire, having a degree
might gain a slight advantage, but my choice would be the candidate with the better manipulative and interpersonal skills over the degree every time.
However, I agree with whoever wrote the answer about Gen Y text language. Your app would go straight in the bin (or 'trash', if it were an online app). You wouldn't even get an S&P with written skills like that