Like anything else, tires are a balance between cost, useful mileage and traction.
Like the old moniker "cheap, fast or good...pick 2", tires are the same.
Wears like iron = horrible traction in wet or snow. Excellent traction = softer rubber and or more aggressive tread which lowers fuel mileage and tread life. And low price generally equals the lowest common denominator between tire life and traction.