Thanks for the infoHemp's bioavailability is just over half of that of whey, beef, or egg. It's kind of shit in comparison especially considering the cost.
Shitty site but the numbers tend to be similar to textbooks i've read.
http://www.marksdailyapple.com/whey-egg-white-casein-pea-hemp-rice-protein-powder-supplement/
Some quick BV scores. Notice that plant protein goes down.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3905294/table/table001/