Reply #10: It's a disagreement, not a misunderstanding.

[Donald Ian Rankin]

I support paying different people doing the same job to the same standard the same amount.

I oppose arbitrarily declaring two different jobs to be "of equal value" and demanding that they are paid the same amount (and there's no non-arbitrary way of doing so).

If an employer chooses to try and systematise their pay scales for different jobs in some fashion, that's all well and good, but it's not something that can be done arbitrarily from outside when e.g. two jobs entailing very similar work have different job market situations.