Eldeco 7 Peaks vs Assotech VSNL — carpet area reality

Been seeing the carpet area game builders play. Eldeco 7 Peaks Residences quotes seem attractive, but what's the usable space? Assotech VSNL Officers Apartment is ready to move, so what you see is what you get. Anyone compared actual carpet area in both? Need real numbers, not brochure promises. Which gives better value?