Matty Fryatt scored his 27th goal of the season to give the Foxes an early lead before Peter Leven's fine double put MK Dons in front. However, winger Max-Alain Gradel struck a stunning free-kick deep into injury time as both sides took a share of the spoils.
And Pearson is adamant his troops have the resilience to continue their remarkable unbeaten run, saying: "What this has also done has proved those people wrong who were starting to think the season was petering out.
"It was a shock to them, there is still a lot of tough games and we have to stay focused for the rest of the season. We showed a lot of resilience and got away with it which is testament to the character of the players and their desire to remain unbeaten.
"We had to defend desperately at times and weren't at our best and we possibly got a bit fortunate but so what, we have to get some luck from time to time."