I dont believe the data at all - the airplanes with ACMS display wildly random values for VGTD, which seems to be the data you are interested in - those things arent built to measure an instantaneous acceleration accurately, not even considering the low resolution. Smooth Flaps 40 landing, ACMS claims its 1.64. First time I was shocked, now I just laugh - Hard crosswind landing, lots of shuddering, 1.43. Forget about it. To my knowledge the definition of a hard landing is still that "the PIC determines that the landing was a hard one", not a box giving a soft warning that it has measured something above a certain threshold... I remember the code VACMAXLA, supposed to give the highest measured G during landing, try that for a change - its usually different from VGTD.