I work with a guy who says he still feels the same now, well into their 30s.
And in warm weather, I have difficult to eat in the morning at all.
I do this despite doing compound lifts (pull ups, dips, squats) while successfully gaining muscle strength.
Also, "Caloric Restriction: A Fountain of Youth for Aging Muscles?" http://www.the-aps.org/mm/hp/Audiences/Public-Press/2015-15....
So every week I gain equal amount (in weight) of muscle to the fat lost. The difference is also visually noticeable (increased upper body muscle tone; decreased belly and lower back fat).
In regards to "doing diet and exercise at the same time" (academically referred to as: resistance training under calorie restriction) you may find this article useful: http://cristivlad.com/resistance-training-under-caloric-rest...
On the other hand, I found being hungry in the morning is short term, and once I got into a project at work or something, I just forgot about it. A light, later lunch (up at 4am, lunch at noon), and a big dinner, and It's not hard at all.
I think this just illustrates that there are actual differences between people. Maybe the primary difference for me is my insomnia. Some people don't have crashes several hours after eating a big breakfast, and they stay satiated longer.
Personally, if I don't eat in the evening, I get tired and want to go to sleep, so I'll turn in at 9pm or so and then I'll get up at 2am and won't be able to sleep until 5am. Whereas if I eat, I'll stay up to 1am or so, and then sleep until 8am. Food primarily affects how much energy I have. More food, more energy.