Jordan is a great defender and opportunist (steals, blocks) but on the ball lockdown d pippen was signifigantly better.
Pippen and Jordan were pretty much equal on-ball defenders. Pippen's height and length gave him a slight advantage and made him a more VERSATILE defender. When you are the main scorer on your team, you tend conserve your energy on the defensive side of the ball. But when MJ made up his mind to shut you down, he did.