I have nothing against the Venty or S&B. I don't own any of their vapes but I can see that many on the forum stand by them for their reliability and efficiency.
I don't think the paragraph above though is completely valid. I own an AVLP that can clear 0.25g in under 2min including heat-up time while using it natively and it pre-dated the Venty. I don't own the TM2, or Roffu either but from what I've read they're also both capable of this just off the top of my head, probably even the FF2 can do this so I don't think it's "pretty unique".
Adding 2x18650s gives it impressive battery life (not innovation per se) but I would say only when you add the adaptive heating via flow control, user flow control and massive 130W power ceiling, then yes I would say all these things are new and pretty unique. Of course there are always tradeoffs for performance and I guess the Venty's increased size compared to other portables is one of them.