Better for what? Cameralabs scored the Sony and the Canon at 89 points each. The Canon is better for portraits with the longer lens whereas the Sony has electronic viewfinder but no touchscreen. The Panasonic will have better IQ and 4K video recording but won't fit in a normal pocket and has an external flash which must also be carried along with the lens cap. If you are going to get a camera that won't fit into a pocket for $900 why not just go APS-C and get the Sony A6000?
For me LX100 and A6000 is still very portable and can put to my pocket and my wife's bag without any problem. However, I prefer LX100 because of the 4K video. Of cause I need to see some reviews of LX100 before I make a decision. Again, I am interested in only Sony RX100MK3 and Panasonic LX100. For you LX100 and A6000 might be too big, but for me that's still a good size. If A6000 had 4K video, surely I might not consider LX100.