Comment by sulam

There is a very clear right answer here provided you consider promotion from a clean point of view.

A promotion is a _recognition_ that you are _already_ operating at a given level. It's an acknowledgement by TPTB that you deserve a given title.

Anything less than this leads to a result where you may not actually be performing at the level the new title requires, which means you could conceivably be promoted and immediately fail to meet expectations in the new role.