You are right, but they are essentially the same.

姚文元就是个文人，码码字还行，胆子小得很。

习近平好歹也能挑200斤走10里不换肩（刨去水分，打个半折，老姚也比不上），还能拿下好几个军委副主席。

---> that is why Xi is rude but Yao was more polite.

By the way, I grow up in the  countryside. And so I know how heavy 200斤is. 

It is impossible that any man can carry 200斤 and walk 10 miles, a silly ox could be able to.