I'm not going to now give a balanced article about the differences and similarities between Apple and Samsung however I'm going to be blunt and tell you, in my opinion Samsung copies Apple. After the first iPhone was launched the next Samsung phone was similar.
Not only do the phones look the same from the outside, the way the phone works on the inside is practically the same and you can't blame that on Android. Although Android had the guts to copy off Apple to, at least they made some noticeable differences.