the numbers are pretty accurate imo if you train 4-5 times a week, hard and heavy.
gotta take many variables into account: lean mass, workout intensity, AAS/hormones, plus of course if you have an active job
16x200 = 3200 kcals, thats not a high maintenance imo..
i was maintaining natty at 180lbs at 3500 kcals or so and i was completely sedentary (college student) except for working out about 90mins 5 days a week
but i was also maintaining at 3500 years later on a shitton of AAS, t3 and so on when i was only hitting the gym 3 days a week for 60mins
drugs do a lot in that regard, especially tren and t3 (and GH too)