"I suppose all round the draw was a good result - for sure we merited a draw," he said.
"I thought we shaded the first half and were in the ascendancy, but in the second half the slope here made it difficult - the lads were warned about that and that has a big bearing on the game.
"Burnley are hard to beat but we nearly managed it, if we'd have had a bit more energy and a couple of subs to bring on later in the game we could have won.
"We've ended up with Kanu playing 90 minutes, we've got no Dave Kitson, no Liam Lawrence, and if we'd have had that sort of quality we could have taken the three points.
"I want to thank the Burnley fans for the reception I got, it was slightly embarrassing, but their appreciation meant a lot to me."
Cotterill expects Nugent to be leaving Fratton Park in the summer.
"I think David Nugent will leave, there's been a call into his agent for a long time that hasn't been returned. Maybe he will now when he reads this because you'll write it.
"That's just my gut feeling. I'm ok with it, nothing's certain, but I just think that will happen. It should stop you asking.
"He was average out there, no more, he did score a great goal though. That was Nuge's contribution and he could have won it late on. He's been great this season but he looked tired."
Burnley assistant manager Jason Tindall felt his side should have taken all three points.
He said: "I thought we were the better side by far, we created quite a few chances, got a lot of balls into the box and on another day would have won the game comfortably.
"But that's football, we're disappointed but we're still in with a great chance of reaching the play-offs.
"They made it difficult for us and got a lot of bodies behind the ball. We were disappointed with the goal we conceded, we got caught on the counter attack but we responded very well and on our day we could have got the second and gone on to win it comfortably.
"When Chris Eagles scores there's a decent amount of time left and the crowd is right behind us.
"You could see they were very tired and he had quite a few opportunities but it was one of those days where the ball didn't bounce for us and their keeper was good for them.
"It's exciting to be playing Leeds next, that's for sure, we are in with a great chance and it's going to be a fantastic game.
"We're more than capable of overturning them as we've shown when we're on our game like we have been recently we can beat anyone in the division.
"It'll be a full house there and a terrific atmosphere, the atmosphere there is fantastic even when there are only 20,000 there never mind 40 like there will be when we go there.
"Both teams have everything to play for, it's going to be a very entertaining game. We want a positive result going into the last game of the season."