My point of view, Surf, is that you initial post suggesting that the list was rubbish and that Graham Houston had no clue what he was talking about was over-the-top. My view was first driven by my opinion that Houston is a pretty decent writer and knows a bit about boxing history. In other words, his list and his right to produce such a list didnt merit your assessment. By all means disagree - it wouldnt be my top 10 either - but there is no need to be so disparaging - particuarly as you had no clue who he was and to be frank he's been writing about boxing for a good few years for estimable publications such as the British Boxing News so the fact you didnt know who he was seems odd to me.
As to methodolgy, you keep acting like this is a precise science: it's not; it's largely a subjective process we're talking about here. Your calls to evidence and proof in the context are slightly amusing because to me knocking out Bennie Briscoe is a pretty clear proof of Valdez' s power but for you its an anomaly (although you do concede that he might be a 'crippling powerpuncher'!!!). Anyway, the point is that I see Valdez and Briscoe and Tonna as murderous punchers who Monzon traded with and came out largely unscathed, and that this, coupled with his longevity - getting hit on the chin by world class fighters for a decade - is a mark of a great, great chin. You dont.