I read the abstract you sent, but we are really talking about different things.
I was only mentioning response to outside conditions. The response seems to be slower precisely because of the insulation meaning the hive bees are not experiencing outside conditions as quickly as the wooden ones. In spring the polys do indeed brood up more slowly than wood, but very soon go past them, as they can keep more brood warm per bee.
You are focussing on winter losses, and actually I am in full agreement with the fact winter losses are far lower in poly than in wood. Over the last 15 years the loss rate in poly has been about half of that in wood. In a mild winter the difference is minor but always positive in favour of poly, but i the catastrophic winter loss year a couple of seasons back when 60% was the normal in wood across our area, and our wooden ones were not far shy of that figure, we lost only 15% in poly and it gave us material to rebuild from.
and on the subject of they 14g typo.....yes it made me smile too....at that rate it will take them 6 years to get the winter feed down. It was of course 14Kg....10 litres...of invert syrup. 14g in 2 days....bit like this summer's honey flows...and that was the good days.
and....I am not really a fan of cold weather flying. I know it is a greatly revered trait by Amm fans, but I am happy if they wait till 8 or 9C, as above that it is more likely to be fruitful activity rather than relatively pointless as there will be little to get.