These graphs suggest that a typical dose of ghrp + ghrh (cjc) will produce a spike of GH equivalent to 14 IU of exogenous GH.
The pulse is of a short duration of about 2 hours versus the much longer half life of exo GH administraton of at least 8 hours.
The area under the curve of exo GH is much greater, though this is an unnatural way to produce GH in the body and can lead to greater side effects such as acromegaly.
The human body produces GH in short pulses similar to the ghrp + ghrh response in the body. These natural spurts of GH are enough to cause the rapid growth of humans during the first 20 years of life.
It can be argued that the human body only needs a short pulse of GH to trigger an anabolic cascading reaction of Gh -> IGF1 -> IGF2 -> other anabolic hormones.