Admissions are taken far less seriously than school age students think or would be comfortable with. The academics are mostly interested in their research. At Oxbridge, the very most rigorous universities for entry, they talk to you for 20 minutes and make a decision based on that and a whole lot of random factors. At most places they skim your application for a minute or two.
If you have better A levels you will, in general, get in to better universities. When you reach the point at which everyone has near-perfect A levels it becomes more random still. The system is probably better than picking names out of a hat, but it's not as different you'd like to think.
T-o dore: You have a ridiculously affectatious, pretentious style of diction. Or should I rather say, you write like a prat.