On one hand, you have the youngest MVP of all time, who was able to bring the Bulls to the ECF against the Heat. In a era that lacked spacing, he cemented himself as one of the greatest finishers and athletic point-guards in NBA history.
On the other hand, you have another incredible scorer, finisher, and shooter in Kyrie Irving. His efficiency has always been a positive aspect of his career. He proved himself to be an incredible finals performers in 2016 when he hit the game winner for the Cavs.
Who in their prime was better? Not ALL-TIME, or who would have been better, barring Rose never gets injured.