I agree. As can Rupp. His best is from a tactical race where Kipchoge, a 2:02 man all day long, ran 2:08:44.
In fairness to Tadese, he obviously didn't give a crap about the marathon except for the appearance fee. He could have run much faster for certain.
Just take 6 minutes off Rupp's 2:10 please. Chop those minutes right off. Rupp can break 2:05 all day long.