I dont kow how many single punch KOs but seem to think he did score one punch KOs against D Hague, B Magee and S Tatevosyan as I remember them
Froch needed an accumulation KO vs. a Taylor who was for some strange reason still attacking him instead of holding and regrouping. Abraham had him on roller skates with a single right in round 9, and blasted him unconscious with a single right in round 12. Same for the Ayala KO which came from nowhere from a single uppercut, leaving him literally face first on the floor with no consciousness. However, I don't think Froch is as clumsy as people view him, as he has shown some improviising skills in previous fights. He has just a love for walking other fighters down without thinking about anything else.
Least taletn doesn't mean a figher is **** - only that he needs more determination and toughness to succeed, so it can be seen as a compliment that Froch got this far with his amount of talent.