"I thought the first half was very much a controlled performance," the Wigan boss said.
"With a bit of luck we could have had two or three goals, such was our quality.
"What we had to do in the second half was win the game again and we did that thanks to a great goal from Nick Powell.
"The lead we had was fragile but I thought we should have had a couple of penalties in the game.
"Marc-Antoine Fortune is clearly pulled over in the first half, whether the referee can't see that I don't know.
"Then in the second half, Marc Albrighton has put the ball past their defender who has absolutely cemented him.
"We've certainly not had our fair share of decisions this season and we had to stand up and be counted late on.
"Even then we could have added to our lead and, given the workload we've had, I was delighted with the three points."