"I think many Playstation 3 owners are bored of their Playstation 3 and therefore wanted something new. (Playstation 4)
Xbox 360 owners on the other hand are still happy with their Xbox 360 and is waiting on certain games to come out before they make the Jump to the next generation."
As I've said to numerous other people that have claimed this, it makes no sense. The PS3 has been selling more games on a weekly basis than the 360 for quite a while. If people were bored of their PS3's (compared to the 360) they'd be buying less games, not more. So the reality is actually the reverse of what you believe.
It makes sense though. The PS3 came out a year later and has had higher sales than the 360 in recent years. The average PS3 owner has owned the system for less time, thus is generally more satisfied with their current gaming situation.
You can argue that 360 owners have been more satisfied with the 360 when talking about the entire 7th generation, but it's certainly not true for the present day.
The real reason the PS4 is selling so much better than the X1 is that Sony played all their cards right, while MS set fire to theirs with a blowtorch. It's going to take a lot more than a handful of big titles to turn things around.
