You are more than welcome to go start a thread in the supplier section to tell everyone why your product is sooooo much better than anything else. You can also bash all the other suppliers in your thread if you like. That's your choice.
In the general scope of the forum, though, you need to play by the rules that the other suppliers play by as well.
If they honor their guarantee, then kate is right, if they don't, then you are, but without concrete evidence it's hard to say which way it would go.
I'm not supporting the claims, but as a supplier, you get to not dismiss them either. If you don't like it, stop selling devices.
-Dusty-