"Whenever you're 2-0 down in a game and you get something from it, you deserve credit," PA quotes Ferguson as saying. "We kept going and scored late on, so credit to my players for coming back and getting something out of it.
"It was a brilliant start from us, we were in complete control of the game. Of course, goals change games and after their first two shots on goal, we were 2-0 down. It left us with a problem.
"It's important when you have a defeat that you don't lose the next game, especially when you're trying to achieve what we are this season. We couldn't afford to lose two games on the bounce."
Peterborough are third in League One, three points off leaders Leyton Orient.