Its a common knowledge that Samsung copies Apple in a number of areas.
A friend of mine's wife works for a component maker for Apple...Strangely, Samsung called them up for the identical part, even though the parts are unmarked when shipped to Apple...Samsung would not have known unless they xrayed the part.
They all steal from each other. That's how competitors stay one step ahead. People have just become so loyal to the principle behind the OS. Some want to be able to customize it to their needs, some just want it to work. Either way, I'm sure they are all pretty much the same. If there was a real product differentiator on the market, you would know about it. Smear campaigns are for when you got nothing left.