I just want to say that I am sorry for the misunderstanding of the PBS show the I saw earlier. Now as for the topic of the Merkava vs. M1a1, I was told by a fellow modeler who was in fact, (suposively) an expert on the subject of IDF armor the same question that I asked here.
Since I am a person who knows very little about this subject, I was on the assumption that he could be counted on as a good person who knew his stuff. Boy was I wrong!!
So if this caused any problems or discontent between the group about me, I am very sorry.