Based on ur audit progression, by year 4, an auditor should be drawing about 5k. My friend is drawing 5.2k after 4 years.

Just looking at the number, you know which is higher. Not to mention by year 4 in Big 4, I assume you are a S2/AM with added responsibilities and probably longer shitty work life balance. For comparison, my friend has only been promoted once again in the past 4 years but is drawing higher salary with significantly better working hours.