I think with best play the game is heavily in your favour, although I'm not sure what plan you have in mind for the endgame. (Trashing Bishops, Vaults, Workshops, trashing all your treasure then buying them again, didn't exploit Vault+Mint, what's going on?) Opponent is kind-of pinned, he's got not much buying power, needs maybe two turns to get his deck humming again.
Noticed: the guy who opens Vault/nothing ends up with no Vault in his deck but has both Workshop and Bishop and is heavily reliant on Bishop. The guy who opens Bishop/Workshop has no Workshop in his deck but has a Vault, which just so happens to be his last purchase before the game ends prematurely and seems to be his plan for the endgame? Nice reversal.