The best thing to do with the numbers is to ignore the numbers.
It's impossible to accurately assess either your BMR or the calories you burn (through exercise and daily living) unless we put you in a lab for several weeks, hook you up to a machine that measures your O2 consumption, and measure all your intake and output. All the calculators are just guesses and averages and may be completely off-base for you.
You did the right thing by picking a reasonable calorie level and trying that out. If you're losing 1 - 2 pounds a week, then you know it's the right level for you. It's that easy!