I would add that AK was an EXTREMELY better passer. Possibly the 2nd best passer in Jazz history. Also, AK's 5x5 games were something all-league extraordinary. He probably could have had 5 times as many 5x5 games too, except usually when he close to having one doing so would put the Jazz at a 20+ point advantage and he'd get to sit the 4th.
Also, AK was 3x NBA All-Defensive team. Hayward will probably never earn that honor.
So, it depends on how you rank the best SF of All-Time. To my mind, it's not simply a matter of stats, but who do you pick for the head-to-head matchup if you want your team to win the game? For my money it's AK, because he's going to shut down a lot of what Hayward tries to do.
I would take Hayward in a head to head matchup. He is a good defender and much better all around offensive player. Prime AK might slow down Hayward but he will still score and make plays for his team and demand extra attention. AK was a much better weakside/help defender than a 1v1 guy. Hayward could potentially shut down AK on the other end. AK is not strong enough to do much against Hayward in the post and isnt fast enough or have enough handle to consistently drive by him. AK also was never a good enough shooter to space the floor. I loved AK but he was maybe our 3rd or even 4th most important player behind Deron, Boozer and maybe even Memo when our team was actually good. If you put prime Hayward on those teams back then we are a much better team.