One thing I noticed during the Raiders-Texans game is Gruden mentioned, when talking to Jack Del Rio, that some teams have great reputations for being "disciplined" teams and others have "undisciplined" reputations. Therefor the teams that are labeled undisciplined, the refs are already prepared to throw flags before the game even starts and will throw at ticky-tacky calls where with the disciplined teams will get the benefit of the doubt. That was coming from an NFL head coach, that has to mean something.
But it shows, good teams like the Seahawks and patriots and packers seem to always have calls go there way or no-calls go there way where the bad teams get screwed on tons of calls that ultimately change the way the game is played out. It's ridiculous.
Unfortunate thing is reviewing every play would make the game excruciatling long and is unfeasible