http://dominion.isotropic.org/gamelog/201212/22/game-20121222-080240-02d74834.htmlSee, ambassador is all about getting your deck size down while keeping your opponents' up, which is pretty much only worth the time investment if you are going to build an engine. Masquerade works sorta similarly, but less efficiently - but it IS some of that card draw engine in the process. Plus, against an opponent with a thinner deck than you, the passing can work almost like an attack.
The key was that, although masq and money wants only one masquerade, lots of engines like two, and against ambassador, you want a lot. But then you can just breeze through.
