Builder promises in Noida Ext are a liability, not an asset

Honestly, I'm starting to think most builder brochures are pure fiction. They show these amazing renders, but the on-ground reality? Total mismatch. I'm looking at Noida Extension properties, specifically Wegmans Signature Tower, for an investment. My main concern is the gap between promised amenities and what's actually delivered at possession. Does anyone here have experience with projects where the green areas or security systems were completely different from what was shown? Matlab, kya tenant attract hoga with a basic park instead of a 'lush landscaped garden'? How does this affect resale value or even maintenance costs down the line? Builders promise full power backup, but is it really for the whole flat ya just common areas? These small things hit your ROI hard. Should I factor in a bigger buffer for post-possession upgrades?