I still think 20 years is excessive but I live in a country where the limit is 25 inside prison so my perspective is different. I do agree that putting aside my personal position on how long sentence should be the courts seem to be giving him the benefit, as always.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you