You are probably correct, Jeff, regarding the regional difference. All I remember is, before leaping michaels we used to show strong 2 suiters by cue-bid over weak 2s.
Why would advancer jump in hearts anyway? Cue bid of a weak 2 opener shows any big 2 suiter. That is what it used to be before leaping Michaels. I admit I am from Europe and we did not play much, if any, against weak 2♦ since Multi is ...