A good poker face in the context of a card game.
Scummy, or not?
No, and way too simplistic.
This would be like raising someone in a bubble for 20 years without any outside knowledge of poker or anything else, and then throwing them into a card game with Fedor Holz for winner take all.
And even that's probalby a stupid wrong analogy but point is, It's only a fair game when both sides know the rules....