Miguel Llera's own goal condemned the Owls to a 10th defeat of the season, to leave the Yorkshire club just above the relegation zone.
Both sides created chances but Wednesday were left pointless, much to the dismay of their manager.
Jones said: "I'm saying the same thing every week.
"There's no team in this division better than us. They might have a bit more composure in front of goal but that's it.
"I'm an honest man and if we were getting hammered every week I would be the first to hold my hands up.
"I keep checking under my car in the mornings to check I haven't run over a nun or a black cat.
"But if you don't take your chances you get punished."