Again this goes back to the point that the inflammation has to be hit early enough and hard.
Lets say you take a guy who has been suffering with low grade inflammation for 10 years at the follicle level,has not known it, and has gradually been thinning over that time. During this time alot of scar tissue has accumulated and the dermal layers of the skin have thickened (fibrosis) having a negative impact on the hair (essentially choking the hair). The guy begins to use cu peptides and the inflammation is slowed or even stopped. The process may even begin to reverse with time (cu peptides have been shown to reverse some of the damage caused by inflammation). However, cu peptides will not totally reverse all the damage that has been caused during those years. Hence, this man will have little or no success using them. Although, still should use them to prevent future inflammation.
Now take a guy that has had inflammation,caused by dht, for a period of 1 year. The chances of cu peptides stopping the inflammation and reversing the damage that has been caused by dht is much much greater. This could hence stop or incredibly slow down the process of male pattern baldness.