so your telling me 1,000 grams of carbs are the same thing as a 1,000 grams of protein?
there both 4,000 calories, so ur body should respond the same to both, and there should be no difference.
WRONG!! a calorie is not a calorie and its the MACROS that you take in, not the calories that really matter in the end.
And I spent four years in college getting double majoring in kinesiology and health educating myself, no need to read that article you posted 
you need to go back and spend another 4 years then because calories count in terms of weight loss or gain.
you metabolic advantage crowd are all the same - i used to be too, untill i read the science.
you are clutching at straws, with your 1000g of carbs vs 1000g of protein comment - always the last hope of a dying argument.
on maintenence if you add 1000g of carbs or protein the result will be the same - weight gain.
on maintenence if you remove 1000g of carbs or protein the result will be the same - weight loss.
this is fact.