I don't own a twist and I don't own a Kgo. That said, the Kgo is a bit better than an Ego ONLY because the Kgo is calibrated to 3.7V as opposed to the 3.4V for the Ego. When you get to VV, the Kgo loses that advantage. Unless the Kgo provides more amperage and that hasn't been established, the difference comes down to styling. So, I don't see what the big deal is.
I don't think the KGO is regulated. My understanding is that the KGO is UNregulated whereas the Ego is regulated (via a boost and limit circuit) to 3.4 volts. To me, that's not a negative for the KGO because the KGO comes off the charger at 4.2 volts and generally charge it before it gets to 3.4 volts, so I'm always vaping at more than 3.4 volts with my KGO.
The KGO VV may not be a big deal, but at least it provides more choices for consumers. The LED display makes it a more desirable choice FOR ME over the Ego Twist.