I'm wondering what scenario it could have been the fault of 2 cyclists? One, sure, loses concentration and suddenly swerves out into the lane; but both of them? Also, they are visually more obvious, so reduce the chances of a genuine SMIDSY.
And I do not have a problem judging the lorry driver: he is not dead; he is not injured; if he is distressed about killing them, then my further condemnation will not worsen that (what could be worse than the knowledge you ended two lives in agony?); there is not the remotest chance I will be on the jury; if a court does find that he is guilty, his sentence will be derisory compared to he has done.