That shites all relative, as temps in Calgary, St. Paul, and even Chicago and Toronto… are different than temps in even the coldest part of the British Island(s). That kind of language seems (to me) to be a marketing sales-speak as an allowable criticism, rather than a true criticism.
I do wish someone would share an insulation standard (R value?) , a waterproofness standard, and a wind-proofness standard. And that manufacturers would submit their product for certification/evaluation etc. Maybe some combination