Until ACE bars are locked by cornering quite hard (0.35G) or not so hard (0.2G) if ACE thinks the vehicle is doing less than 40kph as is possible with mine, they are not the same as rigid bars and the ACE vehicle's suspension is able to move in a manner that non-ACE can't. But in my books the greatest impact of the way shocks work on a 4WD (vs race track) is for the different road/track conditions felt whilst driving in a straight line - dips, bumps and corrugations combined with the differing loads for different trips. In a straight line ACE bars are locked, excepting under 40kph in 'rough road' conditions.
I agree - its not worth worrying about as there are more pressing issues.

