Directly from your link “Worldwide, livestock accounts for between 14.5 percent and 18 percent of human-induced greenhouse gas emissions. The percentage is lower in the United States in part because our overall greenhouse gas emissions are so much higher than other countries: In the United States we emit 16.5 metric tons per person per year compared to a worldwide average of about five metric tons. Most of America’s emissions come from power plants and transportation, with each accounting for a third of the total.”

We emit 3x the emissions as everyone else. The fact that relatively meat is smaller than other places isn’t interesting. It’s lost in the statistical wash of our extreme usage but accounts for a large portion in real terms.

There is virtually no evidence that suggests calories from meat are better for your health than other protein but ruminant protein especially is carbon intensive. So the message is straightforward western countries moving to plant based protein decreases inequality in comparison.