Hmm, I wonder why they are so impressed by the six-strand construction? Assuming they are referring to the number of layered bars in the middle of the sword, did they forget that Sutton Hoo has eight (other, less famous swords also)? I think most swords of that era had four, and Jaap Ypey illustrated several six-bars in the Netherlands from around that time.
They seem to be glossing over the fact that the guy looted his own excavation, too - but I guess that was okay back in the last millennium? I think it is frowned upon these days...