The video of the battle between Golduck and Flareon was uploaded to YouTube. Here are the details of the attacker and the defender, and the description of the video.
Attacker
Note:
The CP of the attacker is the number next to the names of Pokemon.
At the beginning of the battle, the fast move of the active Golduck is Confusion. To beat the Flareon easily, the player switches the Golduck to the another one which can use Water Gun.
2. Water Gun vs Ember
The Golduck uses Water Gun, and the water-type fast move is super effective against the Flareon. The Flareon uses Ember, but the move is not effective to the attacker conversely.
Water Gun
Ember
3. Flareon's Flamethrower
The Flareon uses Flamethrower, the fire-type charge move, but the move is not effective against a water-type Pokemon. The Goludck's Water Gun damages the Flareon much. and the defender is finally beaten down.