Android does more. If you don't know what or how...
Check my post in the "the grass is not greener on the other side" thread. You'll see a good list of stuff iOS can't do and Android can.
I don't care about or download torrents on my phone. I did install Ttorrent once on my sony arc, but after 3 weeks i had not even launched it so i deleted it.
"There is no way to download a rar and extract and upload to NAS".
There are app on appstore that can download a rar and extract it. Uploading to a NAS not sure about, but once can always sync it to cloud and have the NAS sync back. Or, you could jailbreak and have once program do the job fine.
Swype was cool back then, now it is meh. Swiftkey is great, but the stock samsung keyboard is extremely good and i don't find a need to re-install swiftkey on it. The iPhone keyboard was extremely good too and that negated any need for another keyboard.
Can play emulators through jailbreak if that is your thing. I prefer proper mobile games though. Especially touch optimized. However that is personal preference.
Next one taller, well you are probably fine with a wider phone but i like that the width is unchanged. The S3 is pretty uncomfortable to hold.
Live wallpapers are all disabled on my device. Always have been. Useless and battery hogs. The only widget i use is weather and that is present in iOS through notification center. Rest of them always made me go into the app so i just put the app icon on screen instead.
No need to convert videos you say? I have never converted videos since 2010 and played all my mkvs, avis etc fine on iPhone. No jailbreak required either. What was the last time you used an iPhone?
Black list for unwanted calls - there are jailbreak apps for that. But then i have yet to get a solicitor call on my mobile number.
Hide/Block apps with a password. Well if you are into watching that on your phone, can't really comment lol.
Back button is clever idea and android takes the lead there. Similarly photos management is better, but if you have access to iPhoto it becomes a whole lot better. iTunes on windows is part of the iPhone issues i had. And the biggest was photos.
Still, those two aren't enough for me to stick with android for long. I am more excited about WP8, BB10, and somewhat about iPhone 5 than the next nexus unless it is non-samsung and decent sized. But since the android rule is go big nowadays, a nexus is looking further and further.