To a degree that’s true, but the Peace engine strategy tends to go through a growing pains phase what with the purchase of the Tech II, the Garrisons, and the Sergeants, and if the opponent is applying pressure, every gold is precious. Not to mention the price tag on Judgment Day is a considerable $10 including Bigby, and none of that advances the engine at all, plus depending on circumstances he might conflict with a different hero.
At a glance, it looks like I won a game using the Dreamscape / Sergeant combo against you here.