I took it from your top post, quoted above, that you see some correlation between the terms 'transients', 'step response', 'speed', and what a speaker sounds like. Do you or don't you?
So I explained that, other than sufficient step response to deliver 20 kHz of bandwidth, there is little reason to demand to see the step response of a speaker, and it is a misunderstanding to think that faster and faster step responses give one a faster and faster-sounding speaker.
You then tossed off an insult about my knowledge of the subject of, ahem, what 'speaker speed' is. Good job.
If you do have an interest in learning more on this subject, there are several threads on ASR that might assist. Search for 'step response' in the title.
The bottom line is: if you are hearing (in controlled listening conditions) a sense of greater or lesser 'speed' from a speaker, it is almost certainly due to issues that can be seen in the frequency response. Looking at the step response, as if a steeper slope means faster sound, is misleading at best. Like. I. Said.
In fact, Amir only started including step response in his speaker reviews as a courtesy to readers who can't stop wanting it, or as he calls them, "fans of timing analysis". Not because he thinks it tells us anything about how a speaker sounds, that isn't better found in the frequency response.
cheers