scientic proof ........ probably
At the time of writing this, the degree holders have a better ratio than the plebs (just kidding) at passing the ATPL's 1st time. 7:2 against 10:7. This PROVES scientifically that degree holders are are probably more likely to pass 1st time, maybe.
Next time, I will run around and ask people the same questions, then it will be a gallop poll.