I don't think he expected me to have ISO'd Big Man's most recent 4/5 games either. Him telling me that Big Man's traitor game is not at all useful is
as well.
The meta of Big Man as traitor trying to replicate his town meta is absolutely useful when being compared to his actual town games.
As OP says - they've been given fakes of undisclosed quality and not to flavour hunt. Haza is familiar with Castlevania and its lore. A scum Gravedigger or 'glyph absorber' isn't at all out of the question IMO.
I'm still pretty null on Haza if I'm honest but the lean is swinging away from town at this point in time. Banez also seemed pretty sure on Haza as soon as he claimed Albus.
It's total theme/set up spec, but Haza claimed a pretty big character in Shanoa who if Albus has an active character in the game, I'd place bets on Shanoa more likely being a player assigned character as opposed to a fake.
I think in terms of the direction that will give us more information, I think Big Man gives us more than Rugrat.