There are a few more changes than just the battery capacity...
The screen resolution is smaller (SuperAmoled 403ppi) and the processor is less powerful - but this combination increases the battery life again.
The camera is even stronger on the Moto Z Play (16 MP), but has a poorer aperture.
And the biggest plus point: the Z Play has a 3.5 jack :)
I don't know if Digitec will offer the Z Play at some point, but you can order the smartphone "from other providers" with a few days delivery time. ;)
I hope I could help....