Given the amount of times the Silva’s, Sane, KDB, Sterling, mahrez, aguero and even Yaya slalomed into the box, it is quite a feat that the most offensive attacking team of the last decade , with by far the highest number of goals scored , doesn’t have a considerable amount more penalties (or even opposition red cards) given in our favour.
Iirc we generally have the higher number of penalties across a season than most other teams - which I’d expect given how the team plays/how most of the opposition plays. What, iirc, doesn’t follow (you would have thought logically) is the number of penalties against red shirts- united being the big one, but I remember feeling astonishment that we got one against Liverpool (mahrez miss), and similar with Arsenal.
The lack of penalties given against the red shirts, given how we play , is down to far more than unlucky chance/‘better opposition’, it has been a noticeable feature for over a decade of us being the best attacking team that there is biased refereeing (unless we’re 3/4 nil up - as mentioned elsewhere the same thing happens with red shirt opposition against any club regarding carded players, the match stats are ‘even’, but the red shirts ones generally mount up when the game is already won for them)