Was the battle worth to watch or just it was rushed?
I think one of the reasons Paul lost was because of his weird choices. Nidoking, Lairon, and Hariyama, who are they, where did they come from? Why did you (Paul) use them?
I don't know about you guys, but Paul will always be Brandon's son in my canon.
Why? because the types. Nido(Fight), Hariama(Fight), Magmar(Fire).
I didn't have a problem with Nidoking or Hariyama. They're both strong Pokemon, and Hariyama's Fighting type is SE against all three Regi. Besides the main characters, we rarely learn how other trainers got their Pokemon, so it's no big deal with Paul having non-Sinnoh Pokemon...
Lairon's kinda weird though.
Nidoking did use a powerful Earthquake attack against Registeel which for a moment looked like it would have knocked Registeel out.