In reply to Offwidth:
Not suggesting anyone is playing Russian roulette, but all climbers have different approaches to risk, regardless of level.
Theoretically, the grade ought to reflect the average approach to risk of climbers operating at that level. I think it's fair to say that Seb is probably at the extreme end of the range with regard to risk.
However that average will be affected by knowledge and experience, so as Seb gave people confidence in the gear, then maybe the grade dropped from E9 to E8 (or E10 to E9). When WS hit the deck, then that confidence will have vanished and the grade will have bounced back up.
It seems that Ben did indeed take the fall, but I would suggest that his confidence in it will still be less than anyone since Seb.
Given that the route is now technically harder as well, that's two reasons to be impressed by this ascent.
P.S. Note from the report that BB was also looking at Dynamics of Change - that should be interesting