Billy Davies sympathised with opposite number Paulo Sousa over referee Colin Webster's decision not to award Swansea a penalty after Forest's 1-0 win.
The flashpoint came in the 73rd minute when Chris Cohen bundled over Darren Pratley from a cross by Mark Gower, but ref Webster waved away Swansea's frantic appeals for the spot-kick.
Other decisions appeared to go against Swansea and Davies admitted: "I would not have been happy about it, but what goes around comes around and we have had decisions go against us in a lot of games.
"On the balance of play I thought we just about deserved the win. We created the better chances. We should have gone ahead, but Chris Cohen tried not to get his hair dirty when he had the chance to give us the lead.
"It's a big, big win for us and it's a tremendous achievement for this side to be where they are at this point of the season. This time last year 75% of them were fighting relegation and they deserve enormous credit for getting this club where it is now."
The one downside for Forest was an early injury to influential skipper Paul McKenna which threatens to take him out of their promotion bid.