Well I own Maschine MK1 for quite a while and I really agree with those who describe Push and Maschine as 2 very different beasts, fan wars generally go pretty much nowhere...
The most important thing for me is creative workflow, how can I translate a musical idea that comes through my head into the computer as fast as possible ?
What is the "instrument" which is more inspiring to play when you're composing ? Which allows you to bring new ideas quickly ?
I don't really see the point of arguments like "X can do this while Y can't" because in the end none of these products are supposed to control EVERYTHING. I really don't care at looking at the computer from time to time as long as my creative flow doesn't get stopped.
On the composing side of things I think Push is exactly what I was waiting for. Features like scales mode, having both step and real time drum programming and integrating live browser is just what I need to get that track quickly and then jam over my first idea.
Once the track has some foundations I think it would be difficult to beat Maschine large pads and access to Komplete sounds if you own that pack.
What I love about Live is that it has created a new sequencer paradigm with its session view, it's all about workflow. Some other sequancers have much more power regarding some functionalities ( particularly midi ) but Live is about working fast and beeing able to play... LIVE. Push represents exactly the same idea, it doesn't try to copy maschine or any other controller but succeeds really well in its concept as beeing an instrument on top of Live 9.
Just my 2 euros...