Callum McManaman was the match-winner, sealing the points 10 minutes from time after superb play by the electric Shaun Maloney.
Wigan could, of course, end the season with a trophy if they can upset Manchester City in the FA Cup final, but Martinez thinks survival is as good as any silverware.
"We don't just escape. As a football club we win the title every time we stay in the league," he said. "It's a different approach. Any other club fights to avoid something or fears to lose something; we don't.
"We don't fight to avoid relegation. It's not a negative - it's the opposite.
"We are still involved in two major competitions - the league and the cup - and we are ready to win both trophies.
"We showed today we have a big club mentality in these players."