Minato without to much trouble , kurenai is dead in a second , remember when she fought itachi , she was easily overpowered , well imagine that being minato 2 times faster in base form only , kurenai dies very fast , what could guy possibly do against him ? his main thins is tajutsu at wich minaato is faster fore sure + rasengan , not to mention he has boss summons , those frogs are strong too, and even if it would turn out bad for him for some reason he could use dead demon seal god to kill of kakashi and thus making it a tie, but still minato most likely takes this easily
: im not a fanboy , its just a weird line up , more like 2vs1 , kurenai is no use here at all , a boss summon would easily over power her+ if he really wants he can ftg them all away from eachother and fight them 1vs1 actually , altho it still woudnt be needed
