I guess just because you write an article that doesn't automatically mean you know what you are talking about.
The stock 850 produces 56 foot lbs of torque vs the 750 at 48. Hardly dull and flabby, this is a 17% torque increase over the 750, which was already a considered a pretty torquey bike.
As far as the weight goes, the only way you could get 45 lbs of extra weight out of a MK111, would be to compare an fully fueled InterstateMK111 to a fully fueled earlier Roadster model, that would do it, the weight being mostly in extra fuel. Otherwise, according to my findings, my friend's 750 weighs about 16 pounds less than my 850 MK111, mostly the electric starter and gear, I think. In spite of the bit of extra weight, my 850 is quicker than his 750, and, after switching bikes, we both agree the extra torque of the 850 is quite noticeable.
According to the owner of British/Italian Motors here in Vancouver, a former Norton dealer and long time Commando rider, the MK111 version was the most durable and best overall version of the Commando, with stronger Crankcases and many other improvements/refinements over the earlier bikes, not that the earlier bikes aren't good as well.