Michael Phelps- consume 10k calories per day, but he burned it off due to his training. But for the average person who has a 9-5 low intensity job, eating like Phelps will most likely lead to a caloric surplus, which will turn to weight gains.

At the end of the day, calories in calories out. No way around that.

Caloric deficit: lose weight

Caloric maintenance: maintain weight

Caloric surplus: gain weight