Burton's highest finish so far has been 20th in the second tier. Rotherham once finished 3rd in the second tier but that was closer to the formation of organised football than to the present day. I think the fact that Manchester City's scores look so remarkable is partly down to the fact that most top teams faced with "lesser" opposition tend to field an experimental side, expecting to win anyway. (This came gloriously and satisfyingly unstuck for Liverpool and
Leicester recently - so much for "genius" managers.) Manchester City did not play be the rules, I think, deeming it not to be cricket. I'm old-fashioned enough to think it is thoroughly ungentlemany to beat a team from a lower division by a rugby score (or in Durham's case, a cricket score).