diode ladder vs. tr. ladder ?

[Martin Czech]

Someone asked if diode ladders sound different than transistor ladders.
The answer was that the poles of the d.l. are all different whereas
the t.l. poles are at the same location. Cranking up resonance means
imidiately complex poles (in an X-shape) for the t.l., but the
d.l. poles stay real for a while, before spreading out from the real
axis. This would be a difference for shure.

But,
is this not just a question of dimensioning? I think it should be possible
to get the same resonance behaviour out of both types, since diode and 
transistor represent current controlled conductances (1. order explanation),
so it depends more on the filter caps (root locus).

Do parasitic effects have such an influence that the circuits (poles) will never
behave the same way?

m.c.