>>3834202>it just has a lower t/stop.Doubt it. Or if it actually does, the pic in OP is definitely not proof of it.
The pic on the right looks overexposed at least half a stop, if not more.
Check the highlights in the bokehballs, they're blown, while on the left pic they're fine.
Also the plant looks brighter, and the shadow under the shelf.
The in focus part is obviously brighter too, but let's disregard that for a moment cause it might be the lower contrast and aberrations making it appear lighter.
If the guy was silly enough to use autoexposure, that would explain the different shutter speeds. Slightly different composition, the fairy lights hitting the matrix metering areas a bit differently, plus the dark shadow on the right frame in the edge, it's easy to throw metering off by half a stop.
In the end I wouldn't be surprised even if the chink lens is faster in t-stop. It probably has fewer elements as it's not as well corrected, so chances are it might be actually brighter.
My only takeaway from the OP is that the Nikon lens prioritises high contrast and sharpness, but at the expense of bokeh which is clearly smoother on the chink lens (less defined edges *and* less cateye).
Not sure if this kind of prioritisation makes sense in a lens that's all about bokeh.