"if you trip over the lady by rising e/o 1 - surely you would trip over the lady in the real three step by rising e/o 2 - all you're doing is shifting the rise and the flight back by one step."
By delaying the rise as in the proper three step you make it possible for her to keep up with you while rolling through her feet.
If you want to rise early, you will probably find that it's necessary to dance a hover & redirect type of action as in the hover telemark, rather than a continued through action as in a proper three step.
"re the original post maybe there is something in the footer in howard that step 2 of the three step is the strongest step - question is why - maybe the body turn out of the preceding figure absorbs some of the energy from step 1"
It's the strongest step for the same reason that step one of a feather is - you have travel into the step, rise, and travel out of it. In the three step, what we would nominally think of as step 1 is really a sort of inconsiquential connector - the step really only develops from the second step.
These are of course the IDTA step countings consistent with how the other SQQ figures are numbered. The ISTD counts the second or rising step of the figure as its first step.