Actually, without an objective metric, it's hard to explain why some programmer would be paid more than others... So most of the time, it's more about some spe

Actually, without an objective metric, it's hard to explain why some programmer would be paid more than others... So most of the time, it's more about some specifics of the job - with a specific job title (like "Lead Dev" instead of "Dev") - or the number of year of "experience" (actually : in the job). These are not really related to productivity but it's objective