Wilson is more versatile and the better overall player, Kearse was and is awesome in his very specific role but Wilson can do more and is our most explosive hitter in the entire secondary, Quinn often referred to him as one of the primary tone setters on defense in terms of physicality. He was a man possessed against the 49ers crashing down on all the Deebo action.
I get the argument that he should be valued somewhere around the same price as Kearse, and I wouldn't blame them at all for letting him go if he gets somewhere around $8M elsewhere, but I think that's fair value for him and I'd be fine giving him something like 3/24.
That'd make him something like the 20th highest paid safety alongside such luminaries as Marcus Maye, Tracy Walker and Rayshawn Jenkins.
That's plenty fair to me.