A new tyre has been lauched from Michelin and its called the XFN2+. Its been designed to offer better safety on slippery winter roads. Supposedly it offers 10% more grip than previous tyres.
Going on my experience i’d think Michelin are probably correct with there statement. I’m a Michelin man through and through (although you cant see my white rings!) and i’m sure this will be another excellent tyre with outstanding grip.