One pregnant lady decided to not eat on Yom Kippur and had a great son, Rabbi Yohanan. The other pregnant lady ate on Yom Kippur and had a son who hoarded fruit to sell at high prices.
What is the parity and what is the logic?
A Lamdan from Jerusalem (visiting here) pointed out the Maharsha that says that in both cases it was about Taavah. Rabbi Yohanan’s mother controlled her Taavah and had a son who was in control of his Taavot. Whereas the other mother did not control her Taavah and her son had uncontrolled greed.