Exactly judging by the photos anyone skinny could've reached the same results with 3 to 4 months of regular training. Anyone not skinny would've had to just lose weight in 6-12 months and then put in the 3-4 months of training.
I'm sorry if I come up strong but that's completely false. It would require at least 2 to 3 years of vigorous training and perfect nutrition for someone to go from skinny to looking like the second picture.
