Good and interesting article.

But if I not wrong, this statistic figures only refer to specifically common jobs title, in details not mention other influence factor like years of working experience or what kind of company and industry specific. Example: salary earnings for job title "engineer" definitely different between fresh grads and person with 10 yrs exp. Or same job title in "big" company can be slightly / much different compare to "small / medium company". Which I can assume, it's more on "highest possibly pay you can get based on job title" ???