3 days don't mean shit and release date doesn't mean shit. Nintendo announced touch screen input for their next console in 2011 and both competitors tacked touch screen input onto their current consoles and are actually first to market with this. Does that also mean that Nintendo copied from them? I guess they do, right?
Answering a question with a question hmmm? Guess you have no answer then. Might want to take a look at the microsoft sidewinder also, definatly sega inspiried, but still the same form factor as the xbox controller/s and the x360 controller and it was released when, the mid 90s lol.
The first sentence is my answer, the second sentence is an example, and the third/forth questions are either rethorical questions and/or sarcastaball.
Concerning your sidewinder remark, please give me an image of a sidewinder controller that even remotely resembles the xbox controller. I have no idea and I'm scrolling through Google images right now but I can't find one.
Sega and Microsoft had major ties during the late 90s, nothing Microsoft has done controller wise was inprised by anything Nintendo