This 'buff test flix' about DED stuff is bullshit really, and any other ink for the matter. This isn't a personal attack on DED, I'm sure Shaun would be glad to sell you a bottle of DED so you can test it.
But the pictures don't mean shit. It could be DED vs water in the buffing photos for all we know. The only real way is to test it yourself. Compare it to other inks yourself with the buffing agents commonly used on your tags.