Organfreak, thanks. My line of thought is if there were to be a difference in trim rates, then the manual-flight trim-follow-up could result in a more extreme attitude (or lower trimmed airspeed) than for autopilot/autotrim for the same duration; where duration might be the satisfaction of a flight guidance (FD) command.
An alternative view of this might be any difference in the flight control pitch rate limit between manual and autoflight (or over speed pull-up); expecting that manual flight would enable higher pitch rates than for the autopilot.