Anyone notice how well the CCC clubs did during the first full week of play? Four matches - all away. Two wins and two ties.
Yes, there are all kinds of factors. No doubt by playing competitive matches they're further along than the other teams. On the other hand, both the Crew and Galaxy were playing their 3rd game in 8 days, with the Crew having had to travel to Mexico mid-week. Yet they still managed a stoppage time time winner. Maybe they're just the better team.