Assange fled to a consulate in London. After years of annoying everyone in that small building he thought it would be smart to unveil sensitive information on the government of that consulate. So, they kicked him out by letting the British police in, now he's getting prison time because fuck freedom of press apparently. Snowden fled to Russia. He would have never seen the light of day if they would have cought him. Probably Guantanamo Bay torture for the rest of his life. So their situations are different, I don't know why that would make a difference to the trust in them.
Both have a strong moral compass, otherwise they wouldn't have done what they did.
I'd rather trust and believe whistleblowers with a very strong moral compass, acting in the interest of the general public, then big tech companies hoarding in our data, breaking copyright and privacy, all for those tasty billions. Those companies only have a moral code towards their own bank account.