Nocturne is currently a bit too strong?

Nocturne seems to be godlike in the hands of a good player, his passive combines with q does way too much damage and if he has enough attack speed he can proc his passive every 3 seconds late game to decimate enemies in a teamfight. Early game he is uncounterable because of that speed boost and 1 second fear making him a strong duelist and ganker and late game he can still 1 shot a carry with ult and q. Moreover, if timed well with randuins, his passive attack damage and aoe with arm pen can deal some serious damage to the enemy team. I'm not saying Riot should nerf him but they should definitely give either his passive or q a tweak so he can stay in line better with other junglers (except j4 cuz hes borken af) since his numbers has not been reduced in months. Apart from that there's barely any junglers that can outduel him once he finishes his first jungle item and he instagibs anyone below half health with just his ult, q, and some autos. I know that he isn't fotm atm but he and Jarvan both need to be brought down in terms of balance for the sake of healthy gameplay.