Both the mango and animu fucked up the Hit vs Goku fight. The Anime should have the time skip should fail against opponents measurably stronger than Hit liek in the mango. Then you have Hit be at or near Goku's level. So when Goku goes KK, he is able to break through the time skip, but when it wears off, he becomes even more vulnerable to it. Goku has to go higher and higher levels of KK as he gets more and more worn down by Hit and his own use of the KK in an attempt to finish the fight before his body gives out.
Not sure how to fix the mango one since it obviously can't use the KK. Vegeta dropping to 10% just by showing it to Cabba is retarded and makes Vegeta look like he has no foresight or doesn't know the limitations of his own form which flies in the face of past characterization. Otherwise, every part of the Goku vs Hit fit is filled with arbitrary limitations created just make the ending wind down quickly, with Hit only being able to full power for 1 minute, to the full power explosiveness only able to work once which serve to pidgeonhole the writing to only 1 possible ending unless you change the mechanics of their techniques.