NEX (5N, 6, 7, A6000, A3000, A5000, etc) with the SEL 35mm f1.8 or Lumix GX7/GM1 with the PanaLeica 25mm f1.4

Although this forum is focused mostly in the video, my question is for still photography, but equally valid for the video. I love make street photo and usually I do night street photos with my NEX-5N accompanied by Sigma 30mm f2.8 and Zuiko 50mm f1.4 with ambient light and I doubt as the new sensor of Panasonic with the PanaLeica lens.

And I would think in this exercise, both cameras at ISO 1,600, 3,200 and 6,400 at the street in the night, both lens at full aperture, the PanaLeica is faster, but the Sony sensor is larger and has theoretically advantage. but the new sensor of Panasonic seems has cut the distance respect to the NEX.

Some of my shots.

Thanks!