So claim the marketing departments of tyre firms. Always demonstrated by a nice graph containing 'Summer tyre' rather than a specific UHP tyre. Odd that, eh. When selling winter tyres, it seems all summer tyres are exactly the same with identical properties once it hits 6c..
And when Auto Express did a winter tyre test in a cold January and declared the winter tyres to be amazing and the summer PremiumContact to be horrible, when you actually removed the snow results from the test weighting the Premium Contact came 2nd and was superior to all but one of the winter tyres in the wet.
Think back to a few years ago before we had a few winters of snow and everyone went bonkers and before every car forum had winter tyre threads. Think back to a typical cold, miserable and drizzly January morning. Did you ever really have any problems with your quality UHP tyres?