@dr_luv,
Guarded areas are basically areas where there are guards stationed - notice the guards sitting at makeshift containers along the roads; like in BU, Tropicana, Sunway Damansara, etc.
Gated actually means the entire development is gated/fenced with a proper guardhouse at the entrance (think of condominium living).
@b00n,
With reference to gated, I actually *DO* expect the guardhouse and guardposts to be occupied by proper trained guards with actual/proper security measures implemented, and not merely for the sake of creating sales.
A couple of months ago I visited a friend at her new home [i don't remember the name of the development but it's in Puchong, nearer to Cyberjaya]. I was impressed with the entrance statement and the 'gated living' area but I wasn't too impressed with the security measures. I'll say the security measures at Glenmarie Court's much better.
It being a new development, the drive in was quite long and that wasn't too impressive either but in time to come, I'm sure it'll be better *grins* I don't pay too much attention to developments in that part of town as its location is not ideal to me