It's true that the GH4 is not a good low light camera. If low light shooting is a priority, you may want to look elsewhere. I'm a GH4 owner, but I really don't know how it compares to the Canons. That being said, the Gh4 is fantastic in so many ways. Do you have any lenses or are you starting from ground zero?
Yeah I'm starting from ground zero but in the futute I want to get the metabones speedbooster and a sigma 18-35mm.
When I mean low light I mean being in yhe streets at night, it doesn't have to be pitch black.