[somenameforme]

ELO is dependent upon the pool of players that one plays in. Engine ELO's have no relationship to human ratings because no humans play computers under normal conditions. For an example of this phenomena taken to extremes, Claude Bloodgood [1] was a strong amateur who ended up as officially rated as one of the top players in the world (and #2 in the US) simply because he was only playing against a pool of other prison inmates who were in turn playing only against each other. So all his rating reflected was his relative strength in the prison pool.

Computers are definitely much stronger than humans, but not 3600 better. Magnus would certainly be able to eek out plenty of draws, if not only because white can create "simplified" (as a euphemism for dead) positions in just about any variation if he really wants. And Magnus regularly plays these sort of positions literally at the level of supercomputers.

I'd also add that much of the dominance of computers is not based just on raw ability alone, but more psychological issues. Humans can become tilted, intimidated, frustrated, tired, and so on. One of the last major human vs computer events was Kramnik vs Fritz. Kramnik, in a relatively simple position, ended up blundering mate in 1 with plenty of time on his clock. It's unlikely he would have ever made the same mistake against a human. It's just very difficult to get in the same mindset when playing against a human as when playing against a computer. Chess, in spite of being a game of complete information, is still extremely influenced by psychology.

[1] - https://en.wikipedia.org/wiki/Claude_Bloodgood