What do the numbers on the graphic mean?

My understanding of plant based protein is that they're of a far lower quality, and not as well absorbed as animal protein. Just like iron pills vs. iron from beef. My friend had anemia for moths, while trying all kinds of different iron pills. After a friend told her to switch to beef, her anemia cleared up within 2 weeks.

Personally I have encountered huge health benefits from going carnivore. Here's a bit of what I've written on Stacker News on the topic:

Carnivore diet - believe it or not, it healed this oddball disorder for me Can a keto/carnivore diet heal issues like depression, anxiety, OCD, bipolar? Latest steps in my carnivore path - and why you should consider a carnivore diet Carnivore achievements unlocked Taking a temporary break from mostly-carnivore diet during holidays Sugar and Alzheimers Kinda-carnivore diet is leading to WAY more energy Question for carnivores/carnivore-curious folks I'm transitioning ... to a more MEAT centric diet This book is blowing my mind - The Big Fat Surprise by Nina Teicholtz