Banana Joe is correct ... too much technical engineering knowledge can be counter productive.
I managed a 2.1 in aero eng. I was then fortunate enough to be selected for a sponsored integrated ATPL course. The BSc on the application apparently helped during the selection, however the degree level wasn't mentioned or considered.
I then failed the first ATPL aeronautics exam by over thinking the multi choice questions.
During my career I've only had to draw on about 20% of the knowledge allegedly acquired during the degree course. Taylor's theorem was, and always will be, totally beyond me.
You don't need to know the workings inside the black boxes. You only need the knowledge of what part they play in an aircraft system, and which controls and switches to operate if they stop working.