I find that paper a bit confusing...comes with avid connect? I have an avid connect plugin on my box, which i assumed was installed with either Avid or Fusion. I don't have the DNXIQ.
I have read a few things about the audio punch in, but i was more under the impression it was broken at some point, not totally disabled by Avid. So if you use it a lot, that might be a plus for Avid.
They both appear to have two power cables.
Agency certification??? sign me up
Black magic appears to have H265 hardware encoding while Avid has DNXLB encoding (on baseband capture) Neither one of those is a selling point for me right now.
What they both provide is proper timecode out, and multiple in and output ports in a variety of spigots.
I guess the rest of the differences depend on your workflows.