When it comes to learning, "better" is always relative to yourself only. Comparing yourself to other people is pointless, especially on a metric as non-informative as examination scores, because scoring higher than someone else doesn't actually tell you anything about why it happened. Maybe you're just really good at getting high scores in exams, but is that actually a useful skill?

Similarly, scoring higher in your next exam doesn't actually indicate that you have fixed the problems you had during your previous examination. If you actually want to improve, you need to review your own results and find out where you failed and what to correct.