"Likely"? Oh, never mind!
....anyway it doesn't matter much because the necessary bending at the wrist and of the fingers..not necessary in the higher octave(s).... will likely be responsible for difference in speed performance anyway.
Theoretically, I suppose there could be a difference, but at performance speed -- even on fast Irish reels -- it's insignificant. If it exists at all, it's less than the impedance of the action (button, lever, spring), so it has no effect.
And with a good instrument, playing speed doesn't exceed those limiting values. The reeds, even the lowest baritone reeds, on a good Ćola, Albion, etc. respond more quickly than either the player's fingers or the action.
Furthermore it is technically not possible to achieve the same speed in the lowest as highest octave anyway due to mechanism and reed action so your previous statement regarding same performance is not conceivable for that reason either...
this however requires of course that the speed actually exceeds the limiting values...
This is just one of many things about my playing -- "problems" I don't experience, which you insist I must; techniques I use comfortably and as a matter of course -- which you have, over time, stated that you "don't believe". I'm pleased to report that my experience does not appear to be dependent upon your belief.I don't believe it.
the problem... described does not exist for me...
And I don't believe that. I'm not even going to go into my usual diatribe about the fact that you are, in effect, saying that I'm either not competent to observe my own experiences (and the performance of others) or lying, or both. I don't really care.
...you likely are mistaken or deceiving yourself
As far as I know, (s)he has no competence to judge concertina playing. Won't be at the party, anyway. Unfortunately, neither will the Swedish parliamentarian (whose name escapes me at the moment) who plays concertina.Do so, but it better be testified by local public notary.......maybe I can get one of the squeezers tomorrow's birthday party to be a witness.
Demonstrating that you can play "just as fast..." maybe can be witnessed by someone....?
....But stay "tuned".