Hmm, what do you want to compare? AutoQuad is a flight controller board and has no flight time (or well, depends how high you throw it...
). Flight time depends (almost) entirely on the "powertrain" of the multicopter: batteris, ESC's, motors and propellers. And as you know, one can build an "AutoQuad multirotor" based on nearly evey combination of the said components. Same goes for DFI and Hoverfly (and ZeroUAV etc.) although one can buy ARTF or RTF package from those brands (AutoQuad based RTF multirotors are also available but not so thightly branded as for example DJI).
So, did you mean to compare some plug'n'play RTF packages like DJI S800 + Zenmuse with RTF multicopters from Hoverfly and custom made AutoQuad or what? If so, which ones? You might also want to specify your criteria in more detail. "Good pic quality" for example is highly subjective. Name a camera and lens combination you want to lift, for example.
My quick and general comparison between DJI and AutoQuad flight controllers of the same price category (Naza + GPS) would be such:
DJI- Plug'n'play
- Hard to make fly bad
- Simple and fast to tune
- Usually impossible to make fly really well
- Virtaully non-existent support from the manufacturer. Luckily there's so many DJI FC's out there the community base and support huge. Level of technical knowledge in the community is usually quite low (you don't need to be an engineer to set up and fly a DJI FC MR).
AutoQuad- Next to impossible to install (build sometimes includes quircks, hacks and tricks that are not needed with any other flight controller and some of which are not documented let alone recommended in AQ wiki)
- Needs some work to tune (ie. the calibrations).
- After initial hard work needs no tuning at all. Flies with default PIDs like a dream, better than any DJI product (if, and I say it again IF, you have managed to optimize the build according to non-documented requirements).
- Support from the manufacturer is great. Community is small (so you might have to wait for an answer for a while, most of the answer are not to be found with a simple Google search) but technical knowledge within the community is extremely high.
To sum up: DJI is for plug'n'player who just wants to have something in the air fast and simple. AutoQuad is for tinkerers, geeks and perfectionists who want to have the best, no matter what it takes (but doesn't cost you an arm and a leg.)