Yeah, you need not look far to find the absolute crap for tires being peddled on Kijiji these days. I would not want people to be rolling around on all-seasons just yet unless they actually bought good ones.
Here's a review of a reference all-season, the Continental PremiumContact 7, against eight 'budget' all-season tires.
Full data:
https://www.tyrereviews.com/Article/...emium-Tyre.htm
Video in spoiler:
And those results are in wet and dry spring conditions, forget sub 7°C cold or snowy conditions.