Crikey, you're overthinking this...
Firstly, the rate of chain deterioration accelerates dramatically as the chain nears the end of its safe service life. You can't make some graph and predict chain life with any hope of accuracy.
Secondly, chains do not wear evenly, so the measurement method is, to put it mildly, useless horseshit.
Chains are replaced based on what the chain is doing, not on some measurement found in the manual. The chain will warn you well before it's done -- it will get noisy, for one, and require far more frequent adjustment. You also may notice kinks, red debris (rust) and other signs of failed o-rings.
Ride happy, and worry less. Clean the chain sometimes, and order up a replacement chain and sprockets when they show signs of being worn out. After you go through six or eight chains, you'll have a rough idea of how long they last for you... :mrgreen:
2002 Suzuki DL1000 V-Strom, Dark Metallic Space Blue
1983 Suzuki GS850G, Cosmic Blue
2005 KLR685, Aztec Red - Turd II.2, the ReReTurdening