Wrong.The IBF has the morning weigh-ins on the morning of the fight.Fighters can't be over 10 lbs over 168. Bute was 177,15 and Zuniga was 176. And at the official weigh-in Zuniga was slightly heavier.
if you think Bute was at least 20lbs heavier than Zuniga in the ring then pass me some of that :spliff