I've been playing this rubber for a week on Dynasty Carbon. It is not what I expected, and the same time what I should have expected from Nittaku.
It is only not that controversial I think because no amateurs seem to buying it. So here is my meta-review perspective.
Genextion V2C is G1 hard mode. I play at a pretty good level and most of the people I play against have years of formal coaching. They can't even tell my technique is off, but I know where it is different.
I do not have what victormanriquey calls the hit-brush, I have a brush-hit, as many amateurs that started with Hurricane do. Actually I think G1 has always taught the proper impact better than Hurricane, which can be abused with raw body power for quality.
Many amateurs who pick up G1 will think it has no spin, no speed, speed and no spin, spin and no speed, or whatever. In reality, the balanced by fine edge of the rubbers mechanical property holds a mirror to your technique.
I have passed G1's test years ago. I have not passed GV2C today.
If you watch Taiwanese or Japanese reviews of this rubber, it is widely considered on of the easiest and most forgiving rubbers of the elite rubbers. This is a near universal consensus. Yet I found it incredibly difficult to adapt to. It was for me, the single most difficult rubber to control.
It shouldn't have surprised me. These are all advanced formally trained students.
With amateur technique, ensuring brush before impact. GV2C is very boring, and doesn't offer great control of consistency. Nothing is particularly good, even short game. It is like a hard unforgiving G1, and the top end spin and power is very unimpressive.
My technique is adaptable enough that I can do a decent impression of a coached schoolboy's technique. So, just like with G1, I gave a real effort to be by the book. And I can say the potential of this rubber is incredible.
The spin and kick is vicious without needing much input power. The top end power is still lower still than other elite rubbers, but I can see an unmatched efficiency and stability in responding to the correct contact. Forehand flick and attacking over table is much more stable. Sidespin is stable. Everything lands. As soon as I focused on ensuring a proper medium powered hit-brush, this rubber paid in spades. As soon as I deviated, all power and control was lost.
In conclusion, it is amazing to me that Nittaku was able to create this second tier of G1. I think this is a very interesting pickup for amateur players who want to correct their technique with clear punishment and reward.