Watford, their promotion rivals, could have snatched an automatic promotion spot following Hull's dropped points but they fell to a 2-1 defeat at home to Leeds, leaving the Tigers two points clear.
Bruce admitted that the drama experienced was unlike anything he had ever seen before as, though keen to acknowledge his side's limitations, he was also eager to laud their collective effort and desire to win.
"I don't think I've ever seen or witnessed anything quite like that, we had heard Watford were 2-0 up and they weren't - we could have put it to bed. How many chances have we had? We had a penalty and missed it. It was totally ridiculous," he told reporters.
"I have said for weeks there would be twists and turns. The referee gave them an unbelievable decision to give Cardiff a penalty but it's our day. It took guts for us, the players rolled their sleeves up and have put in a real shift.
"To win promotion without any strikers for three months is a remarkable testament to this squad. They might not be as naturally talented but they're a great bunch and they've got a huge desire which has took us where we wanted to be."
As the game finished, some of the Hull players believed their promotion push to be all but over as they were left with an agonising wait with Watford's game ran sixteen minutes longer due to an injury to goalkeeper Jonathan Bond, as defender Paul McShane admitted.
"I thought it was over and was thinking of the play-offs," he told reporters.
"I couldn't have written this better. We made it hard but we saved the best until the last day."