Quite poor form for a mod to be talking like that, to be quite honest, especially when you're clearly misinformed.
I just asked two of my Android using friends (one of whom owns a One X) and both confirmed that Android is slower than iOS in general menu navigation OUT OF THE BOX. This is coming from one person who owned a 4S before swapping for his brother's One X (which he regrets), and somebody who uses a HTC One S alongside a current generation iPod Touch running iOS 5.
Now you may scream 'THATS NOT FAIR THE ONE S ISNT AS FAST AS THE S3 !!!!', unfortunately the speed of the device's hardware is not the real problem, it's a software issue.
But i'll let the facts speak for themselves:
http://www.redmondpie.com/heres-why-androids-ui-will-never-be-as-smooth-as-ios-or-windows-phone-7/
That's where Project Butter comes in:
[video=youtube;ijol7KbqYQs]http://www.youtube.com/watch?v=ijol7KbqYQs[/video]
Unfortunately, the Galaxy S3 (at stock) is not running Android 4.1, and will not in the immediate future, and Jellybean is currently running on a tiny percentage of overall Android handsets. The only device which could arguably be as smooth as the iPhone 4S at this point in time at retail would be a Galaxy Nexus.
The fact that i own the phone doesn't really make a difference, i'm happy to point out the flaws in the current iPhone. The display is on the small side, the aspect ratio is annoying for watching videos, the lack of widgets is stupid, and the lack of wide video file playback support can be a pain.