First, I’d like once again to thank YankelBerel for saying so clearly the stuff that I myself think and would like to write. Yasher koach!
As to the story that the Lubavicher rebbe said that a poshute chossid who learns chassidus is on a higher madreiga than the Chazon ish: that story has been discussed in the past on an earlier thread. It’s true that he said something along those lines. Lubavichers on the other thread tried to mitigate it, mostly unsuccessfully.