David Ive run at London with a golden bond place twice, twice with a club place and once with a ballot place, I trained as hard as I could each time, does that count as evidence?
Mrs P has run London several times too, the last time she was raising money for Much needed improvements to the oncology ward where she was treated, raising a sum in the high four figures that was actually 1% of the total cost and means that if you're having chemo on that ward you'll be a lot more comfortable than you would have been without her efforts.
She trained after a debilitating illness and gruelling chemotherapy, far harder than I have ever trained, in fact I've yet to meet a runner who put more into their training than she did for that race.
So, if we get in the way of the real runners, err..tough.