The method of sharpening or the sharpener you have is not only pertinent to the degree of sharpness you will achieve, but is also dependent on the competence and skill required to use it. Moreover, something like the scary system is less than useless when it comes to grinding a fingernail profile on a bowl gouge. Therefore, taking your statement above in it's literal sense "it doesn't matter what sharpener you have", you are just plain wrong. It matters a great deal on the basis that it is the means to an end, the most suited to the task, and fit for purpose