I think Farr was a much better fighter than Cooper personally - I think Farr may have been the best British heavy of all time - Cooper-Bruno might be a closer fight I think but think Farr is far too busy for Henry, too much variety, too much depth to him, much better level of skills allround - only the power he really lacked - but he he a lot of tenacity to make up for it - only chance I'd give Henry would be to land a big heavy handed punch - but if Joe Louis couldn't stop Farr then I very much doubt Henry would be able to in all honesty
Then the remaining question would have to deal with whether or not 'Enery goes the distance. His eyes being on the end of that Welshman's jab, there could be some genuine doubt as to reaching the final bell.