Exactly. By this logic, one could limit the yearly schedule to 100hrs, then making 1750 would make for some salary!
If you're able to do 1800 while your schedule is 1200, then clearly your schedule is too low, or you allow too much overtime (in this case, by your logic, decreasing safety). We're doing ~1700 per year, but we're allowed only 150 overtime (usually increased to 200-250 around September to meet staffing needs).