I think the clue is in the line "from what I've seen of Duffy".
Which is quite clearly "fifteen seconds on SkySports News, two weeks ago, when Blackburn played Cardiff".
Think Daniel Ayala was the prime factor in Boro going up last season. It certainly wasn't their strikers. I thought Ayala looked different class in many of the games I saw them play. Similarly, Burnley had top class centre halves in Keane and the other bloke whose name escapes me.
Hopefully...