Neither club deserve the lions share. The fans who participated in the pitch invasions, violence, vandalism & rushing of the gates are to blame!
Saying it is the clubs fault is too easy. Its not our fault if one of our fans steals someones flag or drum. It is squarly the fault of the fan themself who commited x,y or z.
Could the police have had more officers present? Yes. Is violence, vandalism & rule breaking only due to that? Of course not. It is on the individual!
For me, that is why both clubs should be critical of the behaviour witnessed.