I have read up the whole thread of yours and i would say that you would definitely lose the case.There's no such strong evidence on what you are trying to claim.
Direct admission from Dogedice.me himself:....
Today we figured out that current user blackjack on the new version of BitDice is dzeros, he was blocked from cashouts with the balance of ~38BTC. He confirmed that it was him. So this one is clear.
....
Regards,
Alex.