In reply to TRNovice: I agree with you. I think for the first ascentionist the climb is always going to feel harder, it's like grading it for an onsight. The first ascent is 'going into the unknown' much like an onsight is. So when people come along afterwards and have seen the moves/seen it's possible it's not a difficult psychologically.
I think that the first ascent of a route is harder than a repeat ascent because as well as the moves you've got the 'is it possible' thing going on.
So maybe E11 is a good grade for a first ascent with the solid climbing and psychological 'is it possible' stuff, but maybe a repeat ascent is easier because it IS possible and you can play the moves in slow mo from the DVD?!
Martin.
ps. all above is pure speculation, please feel free to ignore it if you think its a load of rubbish