Greater Noida upgrade: Brochure promises, real delivery?

2.5 years in my current 2BHK, now eyeing a bigger place. Already have a home loan so EMI is a factor. Planning to check out Satya Villas Extension. Builder brochure mein sab kuch best lagta hai, but actual delivery kitni different hoti hai? Especially green areas and security systems. Kya unke promises real hain ya sirf paper pe?