The numbers of calories/exercise do not mean much except in relation to each other. To loose weight you need total number of calories you eat to be below total calories you use, so the numbers really depend on your weight itself, your metabolic rate, whether you like to be mostly active and exercise a lot or wether you prefer to cut calories. The best way to loose weight is have a combination of some kind of calorie control/exercise routine. If you eat too few calories/day(below 1200, but may differ for you), your body will react by slowing your metabolism and you don't want that to happen. You want your metabolism to increase, and the best way to do it is with exercise, both aerobic and muscle building. Basically, you just need to find a combination of diet/exercise that works for you and allows you enough calorie deficit to loose weight. Start with calculating your metabolic rate and go from there.