Help me understand (Pronation)

Hi,

I have a severe overpronation. Longtime I ran in stability shoes but now I am trained enough for stable neutral.

But there is one thing I don’t understand. As a walk around shoe I have a EvoSL. Most people say that this one is unstable or at last not stable.

But just for fun I filmed me running and to my surprise the pronation with these was much less pronounced than with the Vomero 18 and the Novablast 5

Why do I have less pronation with the less stable shoe ???