I wrote that in the light of most of your Q's. In other words PURELY on build quality ... nothing else, not even on the better screen.
There's absolutely no doubt that the SIII is the better phone, but the quality is shockingly terrible. I for one have the silver strip chipping off. Top right corner.... and I do look after my gadgets, trust me.
Sometimes wonder what a success story HTC would be if it wasn't for their piss poor marketing department, yes and they really cocked up with the WiFi issue, still don't understand how these companies allow something like this to happen.
Back to SIII, many people reporting the SIII to be very little scratch resistant, oh and just wait another six months for the white paint to come off that beautiful /insert sarcasm home button and also don't drop this phone from knee height!
On the positive side, I'm all for performance... I'm running the latest CM nightly. The phone is blistering fast, battery reading must be wrong as I'm currently sitting on 80% after 1d1h15m with 1h Screen time on, 30mins voice call and some other things. It is Sunday so no heavy use today.