Here's a breakdown:
It works as a three part sequencer without menu diving.
It works in Live and other DAWs, in fact you can rewire Live into another DAW and use Drum Racks with Beatstep Pro. Everything you do in Beatstep Pro is recorded into your DAW as midi notes.
Live and Push don't do that. We know the limitations of Maschine in a DAW.
There's serious K.I.S.S. with it, it does chaining of patterns and rolls, mutes etc. but it's basic, it's what Ableton would have done around version 5, before they lost that particular genius and went with reinventing the Launchpad.
I like Maschine too, but NI show all the reasons why I think they would actually suck and making a DAW with Maschine, it's like kids with Aspergers trying to make something intuitive, they hit it with bullseyes and parts where they just turned around and aim that arrow in the opposite direction.
PS Forgot, it's also about 1/4 the cost of Studio and 1/3 of Push 2.