[MAIN SPOILERS] Most one sided defeat of all time?

Was Cersei and the Lannister's defeat of Ellaria Sand and the Dorinish women the most thorough and humiliating defeat of all time?

If you run down the check list:

1. Gregor Clegane raped and murdered Elia Martell

2. Her brother, Oberyn Martell comes to Kings Landing for vengeance only to fail and have his skull crushed infront of his lover, Ellaria Sand

3. Ellaria and her daughters then kill Myrcella, really the only victory for them.

4. Euron Greyjoy, at the behest of Cersei, then kills two of her daughters (Obara and Nymeria) and as we see hangs them from the front of his ship like a trophy.

5. Ellaria and her daugher are then dragged through the streets of Kings Landing on leashes were they are spit on and pelted with garbage.

6. Cersei then poisons the final daughter (Tyene) in front of Ellaria, and tells her that she will watch her slowly die and rot away. Ellaria is last seen chained, gagged, crying, and begging Cersei.

To me this never was a close rivalry/feud, and the Dornish women were totally out of their league with Cersei and the Lannisters. A really sound defeat. Am I way off?