I'm not agreeing with you on this. It falls most assuredly on dieting. For example, don't people in India believe a cow is sacred and cannot eat red meat? I'm not sure which is why I ask. The genetics thing is a poor excuse for anyone so I'm glad you brought that up.
Second....About climate. There is definately no way climate is a factor. In India, it's what....Hot outside? Arid? Does this mean if it's raining outside that my max on my bench press drops 50 lbs? No. Matter of fact, soldiers in Iraq have gyms set up and I'm quite sure both climates are about the same depending on how close/far from the fertile cresant they are. (I noticed a big difference in climate)
Lastly, at 16 years old you've got a pretty advanced program. However, I doubt you need anything more than a 4 or 5 day split to grow since you're relatively new to the gym. I'm not knocking you, but you cannot say that you have years of experience if you're 16...Being a 13 year old running around the gym doesn't count or else I can take my 8 years and add 5 more.
Take advantage of all that natural testosterone flowing rapidly through your veins!! Puberty gives you a great natural advantage that should be utilized through a volume program.