it's amusing that you're so confident in its failure despite having the wrong information.
Why would that be "despite"? That would have to be being confident in its failure despite having information that it would be a success. Surely they're confident in its failure because the information they have says it will be bad?
And then your comment becomes "I'm laughing because you're confident in your beliefs" which is content-free smugness, or "I'm laughing at you because you don't know what I know" which is more or less the same, if not worse.