Ackman's idea of a REIT somewhat neutralizes a total and complete run-off as it involves getting the companies into a new line of business. A Berkowitz' offer acceptance may actually force the companies into REITs if anything is to survive. Under B's, common has little to no future so Ackman's complements B's offer in just this regard, as a way to escape the run-off. So your assumption is correct except that I do not see Ackman's as an alternative to B's in case of a rejection. Generally speaking, both plan's do not harmonize well from the little that has been published, but they could.