A 2019 study indicates the difference in oral ileal nitrogen digestibility between plant and animal protein sources is only a few percent.

“you know you're so busy selling supplements you might not have seen this one month ago there's this new study September 2019 and he pulls up the slide and it says the more precise data collected so far in humans assessing real specific oral allele nitrogen digestibility has shown that the difference in the digestibility between planet animal protein sources are only a few percent contrary to historical findings in rats or determinations using less precise methods at humans okay”