That many PFs and an even distribution of penalties usually suggests sloppy, undisciplined play not overzealous refs. If it was uneven or they got ticky-tacky with holding calls that's one thing but that many PFs is a red flag(no pun intended). Also odds are the teams brought this on themselves if there were 4 PFs in the first quarter. Refs had to establish control from the get-go and stay involved.