"I have got no complaints because we did not deserve to win," said the City boss.
"A few home truths have been said after the game, which have not been heard for a long time.
"We have come off the back of some difficult games and there is always fatigue, but we cannot use that as an excuse for the result."
Southamptopn I didn't think were great but they were good enough to beat cardiff. Their boss Mark Wotte, watched them get back to back wins and keep themselves in with a chance of staying up.
"You have to be united, that is very important and there is a great spirit in the team now," said Wotte.
"The players believe they can stay up and we have had two fantastic results and now we have to keep winning.
"Defensively we were excellent and this is our first clean sheet for some time.
"I am very proud of my team and the way they have been fighting for each other in the last few weeks."