Indeed you did Blitzy, and the oversight is on my behalf. Oh well. At least there's still a bunch of people on the list who should be on some of the other polls of this kind.
Well, Led Zep are considered one of the all time greats, and I think that is rather generous for the material they have written. I really don't see the big deal.
But I can actually appreciate Floyd and Sabbath and Deep Purple and Hendrix and the like, but I don't see what is apparently so much better about Led Zep.