The Cardiff City captain was talking on Real Radio’s sports phone-in with his counterpart Garry Monk on Thursday evening.
With the derby looming large on the horizon the two captains were looking forward to the first league clash between the South Wales rivals for 10 years.
It will be a second taste of Derby action for Purse – he led his Cardiff team out in September in the Carling Cup in a game the Swans won 1-0.
Purse said “It doesnโt get much bigger and none of us can wait for that kick-off now.
“Looking back at the first game, we all know we didnโt do ourselves any justice and we deserved to lose it because Swansea were the better side. In fact, they could have won by more.
“We didnโt perform like we can โ but I donโt think thatโs because we took the game or Swansea lightly.
“At the time we were playing with a lot of confidence and we thought we would win the game and thatโs what came out in the press, but we didnโt take it lightly and it was just that, in the end, the best team on the night won it.
“I actually thought we played really well for the first 20 minutes, but then we let ourselves and the fans down and we know this time we have got to produce better.
“And that gives us a little extra motivation โ itโs three points, but itโs also about local pride and bragging rights.We felt we let the fans down last time so we want to give a performance to put that right.
“Iโd say the game is very similar to the West Midlands derby that Iโve played in, the only big difference is the size of the crowds.
“I think thereโs about 45,000- 50,000 for the Villa-Birmingham games, but in terms of the noise it isnโt any less. And it doesnโt matter how many are there because it means just as much.
“So of course we were disappointed with the first one, we all feel it if we lose any game.
“Weโre absolutely gutted and it ruins my weekend โ I donโt speak to my missus for two days. Itโs an awful feeling that no-one wants and people have to remember that no-one walks out on that pitch wanting to lose.
“So of course it was disappointing to lose in the cup, but the league is our priority this year and on Sunday our priority is the three points. If we can perform better than last time too, then all the better.
“I have to say we wouldnโt be happy with just a top-10 finish.
“Every year Iโve been here weโve been getting closer, but this year we need to get to the play-offs and, if we can get back to the form we were showing at the start of the season, weโll have every chance.
“And I actually think the quality of the Championship has gone downhill over the last couple of seasons. It was certainly tougher when I started with Cardiff three or four years back, but I canโt give a reason for that.
“I think when you look at the squad, both sides are packed with talent.
“Ask the managers and Iโm sure theyโd say they wouldnโt swap their squads for anyone elseโs. So, although it will be a battle on Sunday, I think the quality in the two sides is fantastic and will be there for all to see.
“Iโm obviously very disappointed at being left out at the moment, but the manager is there to make decisions and, whether you agree with them or not, thatโs football and you just have to get on with them.
“We made mistakes against Plymouth and I got punished โ but you just keep your head down and work hard because you never know whatโs around the corner.
“And, over the next couple of days, weโll all be working on a couple of things, have an old versus young game on Saturday morning, where the worst player has to make the tea โ Roger Johnson has lost out quite a lot recently and itโs cost him a few quid!
“But then weโll stay at a hotel on Saturday night, like any away game, travel down together and be ready for it.”