Wigan coach Shaun Wane admitted he was was shocked by watching his side run in 50 points at Headingley.
The Warriors overcame the absence of five first-choice forwards to win 50-8 against a desperately disappointing Rhinos team and make it 11 wins in a row.
"If I'm perfectly honest, I didn't expect us to score that many points," Wane said. "I would have been happy with a win. I think under the circumstances, it's the best we've played this year.
"We had people out with injury and suspension and people playing with injuries but with the players showing character to come to a place like this, it was a great effort.
"All my senior players stood up - they were great for me today - but I need to give special mention to the people who stepped up, Dom Crosby and Rhodri Lloyd."
Leeds coach Brian McDermott added: "Wigan were on fire. They gained some momentum early in the game and built on it.
"Tonight wasn't good enough. We're not where we need to be and we haven't been for a while.
"When the bigger teams have asked the questions, we haven't come up answers and it's a concern.
Leeds' misery was compounded by the loss of half-back Danny McGuire with a pulled abductor muscle five minutes before half-time.