I was able to sit down and A/B the DubT against my Broughctave with all three of my basses (Passive P w/ rounds, passive P w/ flats and an active Stingray with rounds).
Short story: The DubT won and the Broughctave is gone.
Long story:
All of my basses track just fine with the DubT BUT I had to change my technique. I couldn't beat down on my bass like I could with any analog octaver I've had in the past and I'm okay with that. The DubT is definitely sensitive to attack. I've owned 4-5 OC-2s, a couple MXR Vintage Bass Octaves, a Broughctave and some others. The DubT is my first digital octaver. The active Stingray tracked just fine with all knobs fully cranked. Again, I had to change my technique. It does track better when you pull the treble and bass down but I didn't need to.
Now, for the sound. It is definitely a digital octaver but it does cope some of the analog sound. It's not as punchy or aggressive as an analog octaver but it does a good job on its own. The Timbre offers a good variety of tonal options. It can be very clean or synthy/dirty. All of these tests were done without any waveforms. But... For your information, the waveforms are far superior on the DubT than the Broughctave square wave.
In the end, the combination of octaver and waveforms beat out the Broughctave. Additionally, the DubT into the XD is quite incredible! It's better than any other Fuzz, Distortion, OD, Synth I've tried into the XD. Granted, I haven't had the XD too long but you get the idea. The DubT and XD pairing is definitely worth trying out as they are a perfect match, in my opinion!
I'm looking forward to the opinions from some other people.