Both Itachi and Sasuke showed great potential throughout Naruto. But which brother had the highest upside?

Sasuke has unlocked the Eternal Mangekyo Sharingan by implating Itachi's Mangekyo into him, but can he use Itachi's powers?

Sasuke Uchiha had a rough life. While surrounded by friends in the Hidden Leaf village of Konoha, his family and clan was wiped out by his own brother. While his brother, Itachi, had his own ...