sfi, on 2020-September-04, 19:30, said:
If you do so, responder plays 3m when you don't know whether they were weak or invitational (looking for a fit). Opener plays 3m when responder's hand strength is revealed. Using the middle step as a superaccept reverses that, so the defence knows more about responder's hand when they declare.
From my point of view:
- by far the most common position is opener doesn't have a super-accept and responder is weak. In this position I want opener's high cards protected from the opening lead, in case tempo matters and gives us a chance to dump some losers when our weak suit can't be attacked from one side.
- if opener *does* have a super-accept, the fit is good and we are more likely to make even if wrong-sided.
I think this is more important than revealing responder's strength range (still quite broad; just know not invitational) after an opener super-accept. Your opinion may vary.