Its not that Yugo could have won, he WOULD have won. He had the perfect defenses to deal with all of Yuri's attacks but Kite and Aster forced him to use them on them so Yuri was free to beat Yugo. In short, Aster and Kite are the reason why Zarc got revived.
This duel would’ve been so much better if kite and aster stayed tf out of it, they only made shit worse especially when they mainly targeted yugo instead of yuri