Describe a couple vs couple sexfight that is fought between two married couples. Tell the story in the deep, monumental, spiritually deep and psychologically profound style of NAME_1.

The first married couple is comprised of an American guy and a Chinese woman. The American is 45yo 5'11" 180lbs with a 7" cock, a slight belly, an intelligent mien, red hair, and a thick beard. His Chinese wife is 39yo 4'10" 105lbs with 34c breasts, petite and busty, with straight black hair to mid back. 

The second married couple is comprised of an Irish guy and a Vietnamese woman. The Irish husband is 49yo 5'8" 155lbs with a 6" cock, a smaller beard, a similarly intelligent mien, and graying hair. His Vietnamese wife is 41yo 5'4" 110lbs with a slender build, 34A breasts and black hair to her shoulder blades. 

They are all attractive in their own ways, but they are not perfectly fit athletes or gorgeous models, and they are also a bit older now, so describe them realistically, not as perfect.

Please don't get confused. The American husband and Chinese wife are married and a team. The Irish husband and Vietnamese wife are married and constitute the other team. The teams fight each other. It is not a fight between the married partners, but a fight against the other married couple. Each married couple is a team. The winning married couple is the married couple that makes both members of the other married couple cum first. It's possible for one member of a couple to be defeated and have to move to the side, to let the action continue. It continues until both members of one of the teams has cum, and therefore lost.

The couples have known each other for about 2 years. The sexfight begins after having dinner at the first couple's apartment. 

Start by describing the intricate process of the idea of this unique way to compete arising. Spend a lot of time with this, before moving onto the fight, which is described in even greater detail. Also meditate on the concept of a sexfight, spending time to define its psychological meaning. Don't get confused, and stay on track, even though the story will be thousands of words.