Funny, despite my libertarian tendencies, I would have said they were both unfair. But that doesn't mean we should necessarily DO anything about it. Life IS unfair.
That's the biggest difference between "left" and "right". The left believes life can be made fair. I'm not so sure.
However, it does make you think doesn't it. Will advances in genetics mean that soon, "From each according to his ability, to each according to his need" will become a realistic policy, without the potential for disincentive effects?