In reply to Wee Davie:
no; he's pointing out that since Dave didn't actually do either, he can't know for sure. Rupert's summary was entirely factual and accurate. Also, since he's nearer to doing Hubble than most, he's aware of the fact that doing the 'moves' on Hubble is not even half the battle.
Mind you, it's certainly true that Dave is in a better position to know what V14 is that most. I'll bet this piece of climbing is absolutely brick hard and it looks fully terrifying. The nearest comparison I can think of south of the border is High Fidelity, which is probably easier and certainly not as scary!