On Monday, Wigan announced that they had parted ways with the former Manchester United reserve boss after just 22 games after he failed to move the club out of the Championship relegation zone.
Warnock has suggested that he was not surprised to see Joyce get the sack from his role with the Latics, claiming that it was a big step up for someone with no experience of the division.
The Bluebirds boss told BBC Radio Wales Sport: "No disrespect but when Wigan appointed him, I was delighted. I didn't think they were going to be a threat to us.
"I like Warren but you can't just put someone into the Championship who's never been there - it's nothing like youth football."
There are now 14 points separating the two teams in the league table after Cardiff's recent resurgence under Warnock.