It's hard to use a chess analogy with poker, because poker has a lot more decision points. Winning in poker is about drawing the right money into the pot at the right time through use of deception (and knowing the odds lets you know when the right time is at hand). A game of chess is a discrete unit with a winner and a loser (well, unless it's a draw), but most hands of poker have a single winner and no losers. Folding in poker is more of a strategic withdrawal; if the cards aren't there, the cards aren't there.
That's true also chess is a game where all variables are known, poker is not. So I agree they don't line up well in comparison. Again this was just an oversimplification that just because luck is a part of a game it doesn't mean that skill doesn't play a factor.
