It's better to have 2 silvers than a baron and an estate. You might be able to get a jump-start with baron at the start, but considering that masq already lets you play a 6 card hard, it's even better and jump-starting you into golds.
It's always hard to tell because you don't see the masq passings, but you should've either passed or trashed the baron on turn 10, as most estates had already been trashed then. I would've gone the pass, as it would just gum up the other deck.
It lulled you into hanging on to an estate long after you should have, and also lulled you into buying a walled village which should never have been bought. It's not clear if the baron was a bad idea, but the way it messed with your thought process really bogged you down. If I was going to get a second terminal here, it would probably be a second masq.
Geronimoo's sim shows single masq beating out baron/masq handily, but you really need to be able to mess with the masq passing rules to do it properly and masq isn't in rspeer's sim yet.