Well some people would say the same about Sony copying Nintendo, it depends on preference.
So, this is a cop-out. The reason is that Sony has already been trying to follow Nintendo's success with games like Little Big Planet (as different as it is from Nintendo games it sure is aiming a similar market), and then with games like LBP racing, the move, the eye pet and many more casual family-friendly experiences.
The opposite as described in OP is not true.
I'm looking for more depth than that AW.