Some really fantastic info, answered much more than what I was looking for.
viewtopic.php?f=22&t=40765&p=492500#p492500
To summarize :
10% PP and 10% AP has the same effect on tumor growth.
10% PP and 20% PP has the same effect.
20% AP is worse than 10% AP.
What is 21% protein diet? Is that PP or AP or mixture? It has same effect as 20% AP so it can't be PP for sure.