I wonder how the DJs will react to this hackernews post about them, when and if they find it in their regular searching, or if somebody tweets it at them.
So basically, the smoking guns are the TV being tilted the wrong way (oops!) and certain frames of video, especially in the transitions between levels, appearing as only MAME would output them, not real hardware (because MAME is framebuffer based, rather than actually simulating the electron beam, which produces some differences in timing). There's also evidence of v-sync tearing, which could only happen in MAME. Fascinating!
When I lived in the Chicago area as a poor student, I had a dilapidated car with over 200k miles on it that was always costing me money, breaking down, got broken into, got rammed by a drunk driver while parked, etc. When I moved to NYC, the most incredible feeling of relief was selling that car to the scrap man just before leaving town. It's so liberating and care-free not to own a car anymore. The occasional Uber and Zipcar suffice at a fraction of the annual cost. Plus I'm less likely to die violently.