Camera is on par or slightly better than S7 Edge and the wide angle lens gives G6 an edge over S7 Edge!
IMO in terms of hardware (not software) the S7's camera from last year was probably the best possible already. The sensor size, at around 1/2.3" to 1/2.5" is the largest you'll find in mainstream flagship phones, the aperture at f-stop of 1.7 is also the widest so far.
Manufacturers cant go any larger, or they'll get camera bumps which are apparently really undesirable these days (LG G6 even downgraded its sensor size to reduce camera bump), and they certainly arent willing to make the phones thicker to fit bigger sensors.
Thats why now the main improvement potential has to be software processing related. But I doubt any company's software will give such a tremendous edge. Also the software processing can be very subjective. Samsung is notorious for oversharpening and blowing up saturation, LG's looks like watercolour smudges when zoomed in real close etc
don't think I could use it naked