Lagerstroemia Estate move-in: Super area trap is real

Just moved into my Nitya Home Developers flat in Lagerstroemia Estate last month. Sab bolte hain Noida Extension achha hai, but no one talks about the super area trap. My 2BHK feels so small compared to advertised sqft. Builders inflate this to charge more, carpet area is always less. Is this common? Change my mind.