That's the origin of the sunglasses. Bret was nervous as fuck cutting promos, so he wore the shades so people couldn't see his eyes.People forget back in the Hart Foundation days Jim was the talker, the charisma and the fan favorite of the group.
Bret of course was the all around better wrestler and he was groomed properly to come into his own.
Not so hot take: Hart Foundation was the best big/little tag team of all time.