sorry bout that dude lol the only difference in my calculation is for men the equation is as follows (1.0 * BW(kg)*24)*lean factor multiplier
and as far as your body fat goes i can see how an equation that doesn't factor in body fat will result in a higher basal metabolic rate
and as far as activity mulltipliers my equation uses as follows
Lean Factor Percent Body Fat (%) Multiplier
Men
1 10 to 14 1.0
2 15 to 20 .95
3 21 to 28 .90
4 Over 28 .85
Women
1 14 to 18 1.0
2 19 to 28 .95
3 29 to 38 .90
4 Over 38 .85
Average Daily Activity Levels
Couch Potato Range 1.30 = Very Light
Sitting, studying, talking, little walking or other activities through out the day
1.55 = Light
Typing, teaching, lab/shop work, some walking throughout the day
Fitness Buff Range
1.55 = Light
Typing, teaching, lab/shop work, some walking throughout the day
1.65 = Moderate
Walking, jogging, gardening type job with activities such as cycling, tennis, dancing, skiing or weight training 1-2 hours per day
Athlete or Hard Daily Trainer Range
1.80 = Heavy
Heavy manual labor such as digging, tree felling, climbing, with activities such as football, soccer or body building 2 to 4 hours per day
2.00 = Very Heavy
A combination of moderate and heavy activity 8 or more hours per day, plus 2-4 hours of intense training per day
ok so here is what i got now that i know that you are a dude lol
(1*70.45*24)*.95(lean multiplier#2 just a guess for example)
1606.36*1.60(activity multiplier from what you said)
2570.1818181818181818181818181818
well i got 2570.18 for your MT which is pretty close to yours