You are going to see inconsistencies even if every high school referee is certified in USSF. Every referee has a different way that they call the game. What I may consider a foul, somebody else might not. I may give advantage, somebody else may not....most of the rules in soccer are termed, in the opinion of the referee. It leaves a lot of room for intrepretation. There is no way to get every call to be the same from different referees. Look at the NFL, each head referee calls the game a little bit different, each has a different percentage for overturning challenged plays. Until a robot can be programmed to call games exatly the same, there are going to be perceived problems with the way that officials call games. We are only human, and can only do the best that we can do. Some have bests that are far superior than other's bests!