Burks is in no way the same type player as Manu. I love Burks - if someone had a gun to my head and told me to pick my current favorite Jazz-man it'd be him - but he is nowhere close to the creator/defender as vintage Manu. You said it yourself, Hayward is the closest thing to Manu in the league in terms of style of play. Of course Hayward still has tons of work left to get to that level... Even though stats won't reflect it, having an athletic 6-7/6-8 player who can handle, pass, shot and defend is priceless. He's just got find that consistency in all departments...
But Manu is not a MAX player. He's the 3rd best player on that Spurs team.
That is why we shouldn't pay Hayward MAX.