I agree comparing the two is pretty pointless as there's no way meaningful way of doing so. However, I don't think the question of whether KJ would beat Billy's BG time is the same as asking is he better than Billy overall (whatever that might mean). It's a simply a case of could he do the BG, as is now, in the quickest time ever? One day he might have a pop at it and we'll find out. If he did and he beat it, it wouldn't be fair to criticise the achievement because he hadn't won Wasdale a week before or whatever. Nor would it be fair to criticise Billy for never having raced the SW100 or UTMB. Different people, different times. One record though!