This requires a discussion? Silly indeed. The edit you prefer mentioned a right-handed model which the left-handed Iommi played upside down. Fine. Then it jumped immediately to "the original left-handed SG guitar". Don't you suppose the average reader might stop and think "What original left-handed SG guitar is being referred to"? So I restored the original text which explains it. It's one sentence for God's sake, and it serves to provide some needed context.