Higuain is mentally stronger than Dybala, but not immune to pressure.
Dybala this year has a lot of phycological pressure due to personal matters and still is very young to handle some things.
It's good that Higgy takes some pressure off him.
Dybala executed and scored the FK, there is fair play among them and so now Higgy had to try, unlike Dybala, Higgy seemed determined to outdo his mistake and will see him trying that fiercily in the second half.
Maybe Pjanic should be our primary PK taker, he is so strong mentally, always focused and determined!