THIS IS ALL MY OPINION BASED ON MY EXPERIENCE, NOT SCIENTIFIC FACT!
This is a comparison of the strength of different psychoactive cannabinoids. This is based on a combination of my personal experience and binding affinity, and as such should not be taken as gospel. Everyone is different, for example, a few people have said that H4CBD got them the highest they've ever been. This is just a good way to get an idea of their relative power at a glance.