After a cursory glance it would appear the we could reduce animal suffering by focusing on eating the larger animals that produce more food. The idea being, eat the big ones, feed more people, kill less animals.

I'm not entirely serious about this. But I'm curious where the logical flaw is.

The logical flaw is in feed ratios. More feed required to produce less edible mass, therefore more land, water, resources, etc used. Feed production is also typically monoculture in the US. Chickens are actually some of the most efficient animals in this regard: https://awellfedworld.org/feed-ratios/

It's a neat visualization, but it's really missing a domain. They present the counts over time, and nothing else.

There are ~8 billion people living. While some are starving, most of us are eating every day, if not several times per day.

If we assume the average person is eating 2 meals per day, that means 5,840 billion meals per year, or ~185,185 meals per second.