The Tigers were cruelly denied at least a point on their trip to north London when Roberto Soldado converted from the penalty spot after Ahmed Elmohamady had been adjudged to have handled Jan Vertonghen's cross with just over ten minutes remaining.
Bruce felt his side were dealt a harsh blow with the decision which ultimately cost them their fourth defeat of the campaign.
"It is an absolute joke decision," Bruce said.
"It hits his leg for a start and then goes up and hits his arm, how do you give a penalty in that situation?
"We have more directives and meetings and all this nonsense, they are all getting assessed up in the stands but then they give decisions like that which just baffles me and I have to ask the question, would we have got it?
"The disappointment I have is that I have lads playing today who are desperate to play in the Premier League.
"They are desperate to make a fist of it and they are now questioning themselves after Everton last week, where we got some decisions against us and today where, in my opinion, he couldn't wait to give it."
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