Heaton admits he could do little to deny Gonzalo Higuain his goal for the 2-2 draw.
He told Sky Sports: "It was a massive point. We knew it would be a tough game.
"You could see how much it meant to the lads. We've been very good at offensive and defensive set-plays.
"Gonzalo Higuain's shot was a rocket. I couldn't get my hands onto it.
"We can soak up pressure and make it awkward for teams."