Firstly, The sentence for running the exact same website, was 5 years.
https://www.vice.com/en/article/silk-road-2-founder-dread-pi...
The two life sentences and 35 years extra that were given to Ross were most certainly abnormal and used to make an example of. I have yet to see this comparison made although if anyone could provide valid reasons in the difference I would be open to listening.
Secondly, the sheer number of posts on this site stating didn't he hire a hitman. No, and there was no conviction of that.
What reasoning did the judge give for the sentencing? They might involve similar websites but the crimes can be much different. Two people can run the same drug cartel at different times, but that doesn't mean their crimes are the same.