Paul Jewell felt Town were the better side at the Riverside but paid the price for a lack of cutting edge in front of goal.
Blues more than matched Boro but goals from Luke Williams and Mustapha Carayol, the second coming in added on time, gave the home side the victory.
“I thought we were the better team and played some very good football,” said the Town boss.
“We had a lot of possession, passed the ball well and created chances but the only thing that was missing is what matters most, goals.
“We needed that extra cutting edge in front of goal. We had 17 shots at goal but didn’t make their ‘keeper work enough.
“I would have been disappointed to leave with a point, let alone with nothing but we have to take it and go again on Wednesday against Wolves.”
Paul Taylor carried the main threat for Blues with the boss adding: “He was excellent for us. He’s got great skill and is going to be a terrific player. If there was a criticism of him it is that he probably tried too hard to score today but he will get goals for us.
“It was a really good performance from him but it was from a lot of the players. I can’t be too hard on the players because we didn’t get what we deserved over the 90 minutes.”