Samsung is the iphone of the andoid world
I’m assuming you meant this as a compliment, but I think to most Android enthusiasts, that would be an insult. Personally, I do think that comparing UI/UX of Android to iOS is akin to comparing an adult to a child, you can put iOS skin on Android devices word for word down to the pixel.
You can have iOS skin on your Android, word for word, so I wouldn’t say it’s matter of choice or comparing apples to oranges like the other comments. It’s simply a pareto improvement.
But moving on to the important points, where do all the UI/UX elements from the iOS come from? Let’s take an example with quick settings/panel, where you drag down the notification bar to toggle things on/off or read more on notifications. Every mobile UI/UX has quick settings (Control Centre in iOS) for the past 10 years at least, with iOS adopting it the latest.
The history is that it came from Samsung TouchWiz, which is a UI/UX not many people enjoyed due to its performance issues. So while Samsung phones had quick panel since the first generation of smartphones, Android + iOS did not. Then it became the default in Android, then it became the default in iOS… as late as iPhone 8.
So let me start by saying that people don’t just think that OneUI is better than iOS UI/UX; Vanilla Android is already better, and OneUI takes it to another dimension. The reason is because of customisation options.
You can have Windows mobile UI/UX or choose to have no icons on your Android if you want. You can choose to install the iOS skin or go old school if you prefer. You can have whatever keyboard you want (e.g. swiping keyboard with Swype) also, which iOS implemented very late and is disastrous compared to Android.
But OneUI is on another level of its own. Lets you customise individual keys on your keyboard. Samsung also noticed that since phones are getting bigger, so it’s harder to reach the top of the phone with one hand. We need more modern UI/UX philosophy, for example interactive elements of UI/UX are getting pushed lower to our thumbs, while more ‘reading’ elements or information go to the top.
So I just gave you a brief history, but this is barely 1% of the difference, and even Cydia/jailbreaking do not help at all. I would say Android already destroys iOS in terms of UI/UX, as iOS implements many critical things 3 to 8 years late. And OneUI destroys Android, therefore OneUI and iOS are simply incomparable.