My point was simply that no component is heard in isolation, and that the composition of the system largely determines the perception of how "fast" it is.
i.e. Put a "fast" amp with a dynamic speaker and it may not sound to the ear as quick as a "slower" amp with an ESL speaker.
Apples to apples there are amps which sound "faster" than others, but once you begin switching around components, all bets are off which amp will be perceived as "faster".
