Not to hijack the thread, but that is an erroneous statement. A better way of putting it would be, the gh4 does a lot of things better then the c100, however it also DOESN'T do a lot of things better than the c100. For instance, Light an interview properly, setup both cameras and the end result will give the nod to the c100. Better yet, set the gh4 to 4k mode for that interview and transcode the full image to 1080(because that is what you will need to match the detail level of the non de-bayered canon) and after changing the memory card about 10 times and going through the headaches of backing up, transferring, transcoding that kind of data, I would still say the C100 would result in a more pleasing final image. Just so folks know, I'm not talking about data rates, dynamic range or actual resolution when I refer to image detail. Unlike what most other cameras are doing, Canon's cinema line does not de-bayer the raw image stream the same way most dslr, gh3, gh4, 5d, fs700, bmcc, bmpc does.
The c100 also gets a nod when examining the efficiency overall (built in xlr, neutral density, battery life, s35 sensor) and let's not forget some pretty spiffy low light performance :)
For a portable 4k aquisition tool, and cost, huge thumbs up for the GH4! For interviews, documentary work, events, weddings, large volume broll shooting. Big thumbs down. Not that it couldn't work for those demographics, but I see the c100 as an efficient tool that really does make life a lot easier for a lot of filmmakers. 2 different tools meant for different things I guess