The article does say "They found that the most stressed men drew 21 percent more cards from the risky decks than from the safe ones, compared to the most stress

The article does say "They found that the most stressed men drew 21 percent more cards from the risky decks than from the safe ones, compared to the most stressed women, losing more over all." I took this to refer to both "games", although I can see its ambiguity could mean only the latter or both.