Living both identical lives.
The slim guy eating healthy foods living a healthy fit lifestyle, vegetables good nutrition.
He weights 70 Kg / 154lbs with low bfp
The fat man eats like a pig builds up copious amounts of unhealthy bodyweight. He weights 125kg / 275 lbs and is not fit..

Both of them live identical lifestyles other than eating and are of the same age and place.
Both of them evicted on the same day and thrown out on the streets without anything to eat or anywhere to live for the next 100 days to come.\
For these 100 days who will have the better lifestyle? And who'll die first of starvation?