Is it carbohydrates or calories that affect weight loss the most?
Since i've taken this path of nutritional education i've heard alot about carbohydrates being bad for weight loss. Is this true?
At 6'3 and 298lbs and a quite muscular physique how many carbohydrates could i consume per day without them effecting my weight loss?
I exercise alot (people who saw my last thread will know) snd i'm eating about 1500 calories a day. I would like to eat Rice and pasta because they keep you full for a lot longer then protein does but is there a consequence to having them?
Also say per 50 grams of carbohydrates at my weight how many calories would i need to burn for that not to be stored but burnt up during my day?
Personally I don't think there is a general answer as to which has more impact. They are just different frameworks for looking at your nutritional plan.
The calorie approach has been around longer. Counting carbs added an extra component that is crucial for some people. Everyone has their different genetics, eating history, medical history, etc.
So at 1500 calories are you losing any weight? At about 2 lbs. a week? Are you currently eating 50 grams of carbs a day or were planning to start that?
The body works on caloires. A healthy body, one that functions as designed, adjusts its own processes to maximize the use of nutrition it receives.
A 1500 calorie per day diet for someone who is 298 pounds should result in a loss of 3.5 pounds per week based on regular activity. Changing the mix of food substances while keeping the total at 1500 should not impact a change in body weight unless you have a health issue that you have not disclosed.
If you are not losing at least 2 pounds per week then your calculation of the food value consumed (calories) is incorrect.
The reason I say two pounds and not 3.5 is because a lot of times the changes in body weight lag behind and then may appear on the scale as bursts of weight loss. I experienced this on an 800 calorie a day. I should have lost 6 pounds one week and lost only 4. The following week my weight changed by 7, the week after 8.
Have you had a body composition test done? This measures body fat. The caliper method is flawed so I suggest either underwater weighing or the method that uses a light on your bicep. You may have minimal body fat. Contrary to popular belief, extra low body fat can be ill-advised in some people especially those over age 35.
If your body fat percentage at 298 is in the middle teens that means you only have about 20 poinds you could safely loose in fat. After that you may compromise you overall health. That is of course depending on you age.
Is it carbohydrates or calories that affect weight loss the most? 
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