You are wrong. We will take it that Thanos (Omega Wanked and Omniexaggerated + Composite with powers of All Versions) literally solos everyone. This may also lead that Thanos would solo Tronald Dump, even if he is downplayed -Googalfinity% of his power.
Here comes the interesting part.
As Pewdiepie can manipulate memes entirely, he can also manipulate Thanos, as he is also a meme, which spread in the internet.
By saying so, I also claim that Donald Trump is also a meme. By saying so, Pewdiepie could also manipulate Donald Trump and erase him from existence, no matter what.
With all of these being said, I say that Pewdiepie stomps Donald Trump.