Wigan twice went in front against Stoke on Saturday and even missed a penalty.
Martinez said: “It is a little bit frustrating because it is about gaining that know-how.
“At the moment we have to be perfect to earn points in the Premier League and the moment we have a bad 20-minute spell we don’t know how to weather the storm and we get punished.
“I think it is a great strength for any team to know how to get results without playing well.
“You are not going to play well for 90 minutes over 38 games but at the moment we have to work really hard for the results.”
“I was very pleased with the performance,” he added.
“When we play with intensity and focus we can compete against anyone and that is a huge compliment for a club like ours.
“It could easily have gone away from us and I was proud to see a difference in the five-minute period when Stoke were really on top in the second half.”
